{"id":14045,"date":"2025-06-06T06:51:39","date_gmt":"2025-06-05T23:51:39","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=14045"},"modified":"2025-07-03T23:55:10","modified_gmt":"2025-07-03T16:55:10","slug":"cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/","title":{"rendered":"C\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng chi ti\u1ebft"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Cong_thuc_tinh_chu_vi_hinh_vuong\" >C\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Cach_tinh_chu_vi_hinh_vuong\" >C\u00e1ch t\u00ednh chu vi h\u00ecnh vu\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Moi_quan_he_giua_chu_vi_va_dien_tich_cua_hinh_vuong\" >M\u1ed1i quan h\u1ec7 gi\u1eefa chu vi v\u00e0 di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh vu\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Mot_so_dang_bai_tap_tinh_chu_vi_hinh_vuong_thuong_gap\" >M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp t\u00ednh chu vi h\u00ecnh vu\u00f4ng th\u01b0\u1eddng g\u1eb7p<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Dang_1_Tinh_chu_vi_hinh_vuong_khi_biet_do_dai_1_canh\" >D\u1ea1ng 1: T\u00ednh chu vi h\u00ecnh vu\u00f4ng khi bi\u1ebft \u0111\u1ed9 d\u00e0i 1 c\u1ea1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Dang_2_Tinh_chu_vi_hinh_vuong_khi_biet_dien_tich\" >D\u1ea1ng 2: T\u00ednh chu vi h\u00ecnh vu\u00f4ng khi bi\u1ebft di\u1ec7n t\u00edch<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Dang_3_Cho_chu_vi_hinh_vuong_tinh_do_dai_canh\" >D\u1ea1ng 3: Cho chu vi h\u00ecnh vu\u00f4ng, t\u00ednh \u0111\u1ed9 d\u00e0i c\u1ea1nh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Tim_hieu_them_Hinh_vuong_va_hinh_chu_nhat_khac_nhau_nhu_the_nao_ve_chu_vi\" >[T\u00ecm hi\u1ec3u th\u00eam] H\u00ecnh vu\u00f4ng v\u00e0 h\u00ecnh ch\u1eef nh\u1eadt kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o v\u1ec1 chu vi?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Bai_tap_ve_chu_vi_cua_hinh_vuong_de_be_tu_luyen\" >B\u00e0i t\u1eadp v\u1ec1 chu vi c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ec3 b\u00e9 t\u1ef1 luy\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Cac_luu_y_can_nho_khi_lam_bai_tap_tinh_chu_vi_hinh_vuong\" >C\u00e1c l\u01b0u \u00fd c\u1ea7n nh\u1edb khi l\u00e0m b\u00e0i t\u1eadp t\u00ednh chu vi h\u00ecnh vu\u00f4ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Meo_giup_be_lam_bai_tap_tinh_chu_vi_hinh_vuong_hieu_qua\" >M\u1eb9o gi\u00fap b\u00e9 l\u00e0m b\u00e0i t\u1eadp t\u00ednh chu vi h\u00ecnh vu\u00f4ng hi\u1ec7u qu\u1ea3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Ung_dung_cua_cong_thuc_tinh_chu_vi_hinh_vuong_trong_thuc_tien\" >\u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng trong th\u1ef1c ti\u1ec5n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Trong_linh_vuc_thiet_ke_va_hinh_hoc\" >Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf v\u00e0 h\u00ecnh h\u1ecdc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/cong-thuc-tinh-chu-vi-hinh-vuong-va-bai-tap-van-dung-chi-tiet\/#Ung_dung_trong_cac_bai_toan_thuc_tien_khac\" >\u1ee8ng d\u1ee5ng trong c\u00e1c b\u00e0i to\u00e1n th\u1ef1c ti\u1ec5n kh\u00e1c<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>C\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng th\u1ef1c ch\u1ea5t kh\u00f4ng qu\u00e1 kh\u00f3, khi \u0111\u00e2y l\u00e0 h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n v\u00e0 c\u00f3 c\u00e1ch t\u00ednh \u0111\u01a1n gi\u1ea3n nh\u1ea5t. Ch\u1ec9 v\u1edbi gi\u00e1 tr\u1ecb c\u1ea1nh h\u00ecnh vu\u00f4ng cho tr\u01b0\u1edbc s\u1ebd t\u00ednh \u0111\u01b0\u1ee3c chu vi. H\u00e3y c\u00f9ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef t\u00ecm hi\u1ec3u r\u00f5 h\u01a1n ngay trong b\u00e0i vi\u1ebft sau \u0111\u00e2y.<\/p>\n<p>                        View all<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_chu_vi_hinh_vuong\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc l\u1edbp 3, b\u00e9 s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc v\u00e0 l\u00e0m quen v\u1edbi c\u00e1c lo\u1ea1i h\u00ecnh h\u1ecdc. Trong \u0111\u00f3, h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 h\u00ecnh h\u1ecdc c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh chu vi d\u1ec5 nh\u1edb nh\u1ea5t trong c\u00e1c lo\u1ea1i h\u00ecnh.<\/p>\n<p dir=\"ltr\">Chu vi h\u00ecnh vu\u00f4ng ch\u00ednh l\u00e0 \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng bao quanh m\u1ed9t h\u00ecnh hai chi\u1ec1u, ch\u00ednh l\u00e0 \u0111\u1ed9 d\u00e0i 4 c\u1ea1nh bao quanh h\u00ecnh \u0111\u00f3 hay n\u00f3i c\u00e1ch kh\u00e1c chu vi h\u00ecnh vu\u00f4ng b\u1eb1ng t\u1ed5ng \u0111\u1ed9 d\u00e0i c\u1ee7a 4 c\u1ea1nh. Nh\u01b0 v\u1eady c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng l\u00e0:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = a x 4 <\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3: <\/p>\n<ul>\n<li dir=\"ltr\">a l\u00e0 c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng<\/li>\n<li dir=\"ltr\">P l\u00e0 k\u00fd hi\u1ec7u chu vi<\/li>\n<\/ul>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chu-vi-hinh-vuong-1.jpg\" alt=\"C\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_tinh_chu_vi_hinh_vuong\"><\/span>C\u00e1ch t\u00ednh chu vi h\u00ecnh vu\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Mu\u1ed1n t\u00ednh chu vi h\u00ecnh vu\u00f4ng, ta ph\u1ea3i l\u00e0m nh\u01b0 th\u1ebf n\u00e0o? Nh\u01b0 ta \u0111\u00e3 bi\u1ebft, h\u00ecnh vu\u00f4ng l\u00e0 m\u1ed9t h\u00ecnh c\u00f3 b\u1ed1n c\u1ea1nh b\u1eb1ng nhau v\u00e0 b\u1ed1n g\u00f3c vu\u00f4ng. V\u1edbi chu vi h\u00ecnh vu\u00f4ng l\u00e0 t\u1ed5ng \u0111\u1ed9 d\u00e0i c\u1ee7a b\u1ed1n c\u1ea1nh h\u00ecnh vu\u00f4ng. V\u1eady, ta c\u00f3 chi ti\u1ebft c\u00e1ch t\u00ednh chu vi h\u00ecnh vu\u00f4ng nh\u01b0 sau:<\/p>\n<ol>\n<li dir=\"ltr\">X\u00e1c \u0111\u1ecbnh \u0111\u1ed9 d\u00e0i c\u1ea1nh h\u00ecnh vu\u00f4ng: Ta c\u00f3 th\u1ec3 \u0111o \u0111\u1ed9 d\u00e0i c\u1ea1nh h\u00ecnh vu\u00f4ng b\u1eb1ng th\u01b0\u1edbc k\u1ebb ho\u1eb7c th\u01b0\u1edbc \u0111o ho\u1eb7c t\u1eeb d\u1eef ki\u1ec7n m\u00e0 \u0111\u1ec1 b\u00e0i \u0111\u00e3 cho.<\/li>\n<li dir=\"ltr\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng: Ta thay \u0111\u1ed9 d\u00e0i c\u1ea1nh h\u00ecnh vu\u00f4ng v\u00e0o c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng P = a x 4.<\/li>\n<li dir=\"ltr\">Nh\u00e2n \u0111\u1ed9 d\u00e0i c\u1ea1nh h\u00ecnh vu\u00f4ng v\u1edbi 4: Ta th\u1ef1c hi\u1ec7n ph\u00e9p nh\u00e2n \u0111\u1ec3 t\u00ednh ra chu vi c\u1ee7a h\u00ecnh vu\u00f4ng.<\/li>\n<\/ol>\n<p dir=\"ltr\">V\u00ed d\u1ee5: M\u1ed9t h\u00ecnh vu\u00f4ng c\u00f3 c\u1ea1nh d\u00e0i 5 cm.<\/p>\n<p dir=\"ltr\">Chu vi h\u00ecnh vu\u00f4ng \u0111\u00f3 l\u00e0: P = 5 x 4 = 20.<\/p>\n<p dir=\"ltr\">V\u1eady chu vi c\u1ee7a h\u00ecnh vu\u00f4ng l\u00e0 20 cm.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Moi_quan_he_giua_chu_vi_va_dien_tich_cua_hinh_vuong\"><\/span>M\u1ed1i quan h\u1ec7 gi\u1eefa chu vi v\u00e0 di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh vu\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">M\u1ed1i quan h\u1ec7 gi\u1eefa chu vi v\u00e0 di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u nh\u01b0 sau:<\/p>\n<ul>\n<li dir=\"ltr\">Chu vi h\u00ecnh vu\u00f4ng t\u1ec9 l\u1ec7 thu\u1eadn v\u1edbi \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng t\u0103ng l\u00ean, th\u00ec chu vi c\u1ee7a h\u00ecnh vu\u00f4ng c\u0169ng t\u0103ng l\u00ean theo. (C\u00f4ng th\u1ee9c t\u00ednh: P = a x 4)<\/li>\n<li dir=\"ltr\">Di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng t\u1ec9 l\u1ec7 b\u00ecnh ph\u01b0\u01a1ng v\u1edbi \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng t\u0103ng l\u00ean g\u1ea5p \u0111\u00f4i, th\u00ec di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh vu\u00f4ng s\u1ebd t\u0103ng l\u00ean g\u1ea5p b\u1ed1n. (C\u00f4ng th\u1ee9c t\u00ednh: S = a^2)<\/li>\n<\/ul>\n<p dir=\"ltr\">Nh\u01b0 v\u1eady, d\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c t\u00ednh t\u00ednh chu vi, di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng l\u1edbp 4 k\u1ec3 tr\u00ean, th\u00ec\u00a0chu vi h\u00ecnh vu\u00f4ng t\u0103ng l\u00ean g\u1ea5p \u0111\u00f4i th\u00ec di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh vu\u00f4ng t\u0103ng l\u00ean g\u1ea5p b\u1ed1n. Nh\u01b0ng c\u1ea7n l\u01b0u \u00fd r\u1eb1ng, m\u1ed1i quan h\u1ec7 n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 tr\u1ef1c ti\u1ebfp gi\u1eefa chu vi v\u00e0 di\u1ec7n t\u00edch, m\u00e0 l\u00e0 m\u1ed9t m\u1ed1i quan h\u1ec7 gi\u00e1n ti\u1ebfp th\u00f4ng qua \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_dang_bai_tap_tinh_chu_vi_hinh_vuong_thuong_gap\"><\/span>M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp t\u00ednh chu vi h\u00ecnh vu\u00f4ng th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Sau khi \u0111\u00e3 n\u1eafm \u0111\u01b0\u1ee3c c\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i t\u1eadp li\u00ean quan th\u01b0\u1eddng g\u1eb7p m\u00e0 c\u00e1c h\u1ecdc sinh c\u1ea7n ch\u00fa \u00fd:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chu-vi-hinh-vuong-01.jpg\" alt=\"C\u00f3 nhi\u1ec1u d\u1ea1ng b\u00e0i t\u1eadp li\u00ean quan t\u1edbi vi\u1ec7c t\u00ecm chu vi c\u1ee7a m\u1ed9t h\u00ecnh vu\u00f4ng. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_1_Tinh_chu_vi_hinh_vuong_khi_biet_do_dai_1_canh\"><\/span>D\u1ea1ng 1: T\u00ednh chu vi h\u00ecnh vu\u00f4ng khi bi\u1ebft \u0111\u1ed9 d\u00e0i 1 c\u1ea1nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 d\u1ea1ng b\u00e0i t\u1eadp c\u01a1 b\u1ea3n nh\u1ea5t khi h\u1ecdc to\u00e1n h\u00ecnh vu\u00f4ng. C\u1ee5 th\u1ec3, \u1edf b\u00e0i t\u1eadp n\u00e0y \u0111\u1ec1 b\u00e0i s\u1ebd cho c\u00e1c em bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u1ed9 d\u00e0i c\u1ee7a c\u1ea1nh h\u00ecnh vu\u00f4ng cho tr\u01b0\u1edbc v\u00e0 y\u00eau c\u1ea7u t\u00ednh chu vi.<\/p>\n<p dir=\"ltr\">V\u1edbi d\u1ea1ng b\u00e0i t\u1eadp n\u00e0y, c\u00e1c em ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a h\u00ecnh ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 gi\u1ea3i \u0111\u01b0\u1ee3c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: T\u00ednh chu vi h\u00ecnh vu\u00f4ng ABCD v\u1edbi \u0111\u1ed9 d\u00e0i c\u00e1c c\u1ea1nh \u0111\u1ec1u b\u1eb1ng 3cm<\/em><\/p>\n<p dir=\"ltr\"><em>L\u1eddi gi\u1ea3i:<\/em><\/p>\n<p dir=\"ltr\"><em>Chu vi c\u1ee7a h\u00ecnh vu\u00f4ng ABCD l\u00e0: 4 x 3 = 12 (cm).<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u00e1p s\u1ed1: 12 cm<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_2_Tinh_chu_vi_hinh_vuong_khi_biet_dien_tich\"><\/span>D\u1ea1ng 2: T\u00ednh chu vi h\u00ecnh vu\u00f4ng khi bi\u1ebft di\u1ec7n t\u00edch<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\"><em>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a m\u1ed9t h\u00ecnh vu\u00f4ng khi ch\u1ec9 bi\u1ebft di\u1ec7n t\u00edch c\u1ee7a n\u00f3? <\/em>V\u1edbi \u0111\u1ec1 b\u00e0i cho di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng, y\u00eau c\u1ea7u c\u00e1c em t\u00ednh chu vi l\u00e0 d\u1ea1ng b\u00e0i t\u1eadp n\u00e2ng cao, \u0111\u00f2i h\u1ecfi h\u1ecdc sinh c\u1ea7n ph\u1ea3i \u1ee9ng d\u1ee5ng linh ho\u1ea1t c\u00e1c ki\u1ebfn th\u1ee9c, c\u00f4ng th\u1ee9c t\u00ednh c\u1ea3 chu vi v\u00e0 di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh \u0111\u1ec3 gi\u1ea3i.<\/p>\n<p dir=\"ltr\">V\u1edbi b\u00e0i t\u1eadp n\u00e0y, c\u00e1c em c\u1ea7n ghi nh\u1edb nh\u1eefng c\u00f4ng th\u1ee9c v\u00e0 ki\u1ebfn th\u1ee9c sau:<\/p>\n<ul>\n<li dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng: S = a2<\/li>\n<li dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh chu vi: P = a x 4<\/li>\n<\/ul>\n<p dir=\"ltr\" style=\"padding-left: 40px\"><em>Trong \u0111\u00f3:<\/em><\/p>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S l\u00e0 di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 k\u00fd hi\u1ec7u chu vi<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">a l\u00e0 c\u1ea1nh<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u1ea3i b\u00e0i t\u1eadp n\u00e0y, h\u1ecdc sinh c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n theo 2 b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 1: \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng, t\u1eeb \u0111\u00f3 suy ra \u0111\u01b0\u1ee3c \u0111\u1ed9 d\u00e0i c\u1ea1nh<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u01b0\u1edbc 2: T\u1eeb \u0111\u1ed9 d\u00e0i c\u1ea1nh \u0111\u00e3 t\u00ecm \u0111\u01b0\u1ee3c, b\u1eaft \u0111\u1ea7u \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ecm chu vi ch\u00ednh x\u00e1c.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng l\u00e0 16cm2, t\u00ednh chu vi h\u00ecnh vu\u00f4ng.<\/em><\/p>\n<p dir=\"ltr\"><em>B\u00e0i gi\u1ea3i:<\/em><\/p>\n<p dir=\"ltr\"><em>\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng S = a x 2 =&gt; a x 2 = 16 =&gt; a = 4 (cm)<\/em><\/p>\n<p dir=\"ltr\"><em>\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh chu vi: P = a x 4 =&gt; ta \u0111\u01b0\u1ee3c chu vi h\u00ecnh vu\u00f4ng l\u00e0 4 x 4 = 16cm.<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u00e1p s\u1ed1: 16 (cm)<\/em><\/p>\n<table style=\"border-collapse: collapse;width: 100.01%;background-color: #fbeeb8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5932%\">\n<p style=\"text-align: center\">\u0110\u1eeaNG B\u1ece L\u1ee0!!<\/p>\n<p style=\"text-align: center\">Ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc To\u00e1n b\u1eb1ng ti\u1ebfng Anh, gi\u00fap ph\u00e1t tri\u1ec3n t\u01b0 duy m\u1ed9t c\u00e1ch to\u00e0n di\u1ec7n nh\u1ea5t.<\/p>\n<p style=\"text-align: center\">Nh\u1eadn \u01b0u \u0111\u00e3i l\u00ean \u0111\u1ebfn 40% NGAY T\u1ea0I \u0110\u00c2Y!<img decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/taimienphiMM.png\" width=\"185\"><\/p>\n<\/td>\n<\/tr>\n<\/table>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dang_3_Cho_chu_vi_hinh_vuong_tinh_do_dai_canh\"><\/span>D\u1ea1ng 3: Cho chu vi h\u00ecnh vu\u00f4ng, t\u00ednh \u0111\u1ed9 d\u00e0i c\u1ea1nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">C\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u00e0i tr\u00ean, \u0111\u1ec1 b\u00e0i s\u1ebd c\u00f3 chu vi h\u00ecnh vu\u00f4ng v\u00e0 y\u00eau c\u1ea7u c\u00e1c em s\u1ebd t\u00ecm ra \u0111\u1ed9 d\u00e0i c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u00f3. \u0110\u1ec3 gi\u1ea3i b\u00e0i t\u1eadp c\u0169ng ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh chu vi \u0111\u1ec3 suy ra c\u00e1ch t\u00ecm chi\u1ec1u d\u00e0i c\u1ea1nh \u0111\u01a1n gi\u1ea3n.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho m\u1ed9t h\u00ecnh vu\u00f4ng ABCD v\u1edbi chu vi l\u00e0 8cm, t\u00ednh chi\u1ec1u d\u00e0i c\u1ea1nh h\u00ecnh vu\u00f4ng \u0111\u00f3.<\/em><\/p>\n<p dir=\"ltr\"><em>C\u00e1ch gi\u1ea3i:<\/em><\/p>\n<p dir=\"ltr\"><em>Ta c\u00f3 c\u00f4ng th\u1ee9c P = a x 4 =&gt; a x 4 = 8 =&gt; a = 8 : 4 = 2.<\/em><\/p>\n<p dir=\"ltr\"><em>\u0110\u00e1p s\u1ed1, chi\u1ec1u d\u00e0i c\u1ea1nh h\u00ecnh vu\u00f4ng b\u1eb1ng 2cm.<\/em><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tim_hieu_them_Hinh_vuong_va_hinh_chu_nhat_khac_nhau_nhu_the_nao_ve_chu_vi\"><\/span>[T\u00ecm hi\u1ec3u th\u00eam] H\u00ecnh vu\u00f4ng v\u00e0 h\u00ecnh ch\u1eef nh\u1eadt kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o v\u1ec1 chu vi?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>H\u00ecnh vu\u00f4ng v\u00e0 h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ec1u l\u00e0 hai h\u00ecnh t\u1ee9 gi\u00e1c, c\u00f3 b\u1ed1n c\u1ea1nh v\u00e0 b\u1ed1n g\u00f3c. Tuy nhi\u00ean, hai h\u00ecnh n\u00e0y c\u00f3 \u0111i\u1ec3m kh\u00e1c nhau v\u1ec1 chu vi, d\u1ec5 th\u1ea5y nh\u01b0 h\u00ecnh vu\u00f4ng c\u00f3 b\u1ed1n c\u1ea1nh b\u1eb1ng nhau, trong khi h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 hai c\u1ea1nh \u0111\u1ed1i di\u1ec7n b\u1eb1ng nhau v\u00e0 hai c\u1ea1nh c\u00f2n l\u1ea1i b\u1eb1ng nhau.<\/p>\n<p>V\u1edbi c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 P = (a + b) x 2.<\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>P l\u00e0 chu vi h\u00ecnh ch\u1eef nh\u1eadt<\/li>\n<li>a l\u00e0 \u0111\u1ed9 d\u00e0i chi\u1ec1u d\u00e0i h\u00ecnh ch\u1eef nh\u1eadt<\/li>\n<li>b l\u00e0 \u0111\u1ed9 d\u00e0i chi\u1ec1u r\u1ed9ng h\u00ecnh ch\u1eef nh\u1eadt<\/li>\n<\/ul>\n<p>Ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn, chu vi h\u00ecnh vu\u00f4ng ch\u1ec9 ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng, trong khi chu vi h\u00ecnh ch\u1eef nh\u1eadt ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0i chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bai_tap_ve_chu_vi_cua_hinh_vuong_de_be_tu_luyen\"><\/span>B\u00e0i t\u1eadp v\u1ec1 chu vi c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ec3 b\u00e9 t\u1ef1 luy\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Sau khi \u0111\u00e3 n\u1eafm \u0111\u01b0\u1ee3c l\u00fd thuy\u1ebft v\u1ec1 c\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng, d\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp \u0111\u1ec3 c\u00e1c em c\u00f3 th\u1ec3 t\u1ef1 luy\u1ec7n:<\/p>\n<p dir=\"ltr\">B\u00e0i 1: T\u00ednh chu vi h\u00ecnh vu\u00f4ng c\u00f3 \u0111\u1ed9 d\u00e0i c\u1ea1nh l\u1ea7n l\u01b0\u1ee3t b\u1eb1ng:<\/p>\n<table>\n<tr>\n<td>\n<p dir=\"ltr\">a) 15 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">b) 4 dm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">c) 33 m<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">d) 7 m 15 dm<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p dir=\"ltr\">e) 12 dm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">g) 25 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">h) 10 m<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">i) 6 dm 3 cm<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">B\u00e0i 2: T\u00ednh \u0111\u1ed9 d\u00e0i c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng bi\u1ebft chu vi h\u00ecnh vu\u00f4ng l\u1ea7n l\u01b0\u1ee3t l\u00e0:<\/p>\n<table>\n<tr>\n<td>\n<p dir=\"ltr\">a) 44 m<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">b) 96 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">c) 224 dm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">d) 64 dm<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p dir=\"ltr\">e) 12 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">g) 100 m<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">h) 56 dm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">i) 2 m 8 cm<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">B\u00e0i 3: Chu vi c\u1ee7a h\u00ecnh vu\u00f4ng c\u00f3 \u0111\u1ed9 d\u00e0i c\u1ea1nh b\u1eb1ng 12cm l\u00e0:<\/p>\n<table>\n<tr>\n<td>\n<p dir=\"ltr\">A. 48 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">B. 52 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">C. 36 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">D. 24 cm<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">B\u00e0i 4: M\u1ed9t t\u1ea5m th\u1ea3m h\u00ecnh vu\u00f4ng c\u00f3 c\u1ea1nh 20 cm. Chu vi c\u1ee7a t\u1ea5m th\u1ea3m \u1ea5y l\u00e0:<\/p>\n<table>\n<tr>\n<td>\n<p dir=\"ltr\">A. 80 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">B. 90 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">C. 100 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">D. 110 cm<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">B\u00e0i 5: M\u1ed9t t\u1ea5m b\u00eca h\u00ecnh vu\u00f4ng c\u00f3 chu vi b\u1eb1ng 14 dm 4 cm. C\u1ea1nh c\u1ee7a m\u1eb7t b\u00e0n \u0111\u00f3 b\u1eb1ng:<\/p>\n<table>\n<tr>\n<td>\n<p dir=\"ltr\">A. 22 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">B. 28 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">C. 36 cm<\/p>\n<\/td>\n<td>\n<p dir=\"ltr\">D. 40 cm<\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">B\u00e0i 6: T\u00ednh chu vi h\u00ecnh vu\u00f4ng bi\u1ebft di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng l\u00e0 36 cm2<\/p>\n<p dir=\"ltr\">B\u00e0i 7: T\u00ednh c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng c\u00f3 chu vi l\u00e0 1024m<\/p>\n<p dir=\"ltr\">B\u00e0i 8: T\u00ednh chu vi h\u00ecnh vu\u00f4ng bi\u1ebft c\u1ea1nh c\u1ee7a h\u00ecnh vu\u00f4ng d\u00e0i 25cm<\/p>\n<p dir=\"ltr\">B\u00e0i 9: M\u1ed9t h\u00ecnh vu\u00f4ng c\u00f3 di\u1ec7n t\u00edch l\u00e0 144cm2 .T\u00ednh chu vi h\u00ecnh vu\u00f4ng \u0111\u00f3.<\/p>\n<p dir=\"ltr\">B\u00e0i 10: M\u1ed7i vi\u00ean g\u1ea1ch c\u00f3 c\u1ea1nh 20cm. T\u00ednh chu vi h\u00ecnh ch\u1eef nh\u1eadt gh\u00e9p b\u1edfi 3 vi\u00ean g\u1ea1ch nh\u01b0 th\u1ebf.\u00a0<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_luu_y_can_nho_khi_lam_bai_tap_tinh_chu_vi_hinh_vuong\"><\/span>C\u00e1c l\u01b0u \u00fd c\u1ea7n nh\u1edb khi l\u00e0m b\u00e0i t\u1eadp t\u00ednh chu vi h\u00ecnh vu\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tr\u01b0\u1edbc khi l\u00e0m c\u00e1c b\u00e0i t\u1eadp v\u1ec1 t\u00ednh chu vi h\u00ecnh vu\u00f4ng l\u1edbp 4, th\u00ec h\u1ecdc sinh c\u1ea7n l\u01b0u \u00fd m\u1ed9t s\u1ed1 \u0111i\u1ec1u \u0111\u1ec3 kh\u00f4ng b\u1ecb sai k\u1ebft qu\u1ea3, nh\u1ea5t l\u00e0 trong nh\u1eefng k\u1ef3 thi quan tr\u1ecdng. C\u1ee5 th\u1ec3 nh\u01b0:<\/p>\n<ul>\n<li dir=\"ltr\">Mu\u1ed1n t\u00ednh chu vi h\u00ecnh vu\u00f4ng th\u00ec h\u1ecdc sinh c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn\u00a0\u0111\u01a1n v\u1ecb \u0111o c\u1ee7a c\u00e1c c\u1ea1nh. N\u1ebfu c\u00e1c c\u1ea1nh \u0111\u01b0\u1ee3c ghi b\u1eb1ng c\u00f9ng m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o, th\u00ec kh\u00f4ng c\u1ea7n th\u1ef1c hi\u1ec7n \u0111\u1ed5i \u0111\u01a1n v\u1ecb. Tuy nhi\u00ean, n\u1ebfu c\u00e1c c\u1ea1nh \u0111\u01b0\u1ee3c ghi b\u1eb1ng c\u00e1c \u0111\u01a1n v\u1ecb \u0111o kh\u00e1c nhau, th\u00ec c\u1ea7n th\u1ef1c hi\u1ec7n \u0111\u1ed5i v\u1ec1 c\u00f9ng m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o tr\u01b0\u1edbc khi t\u00ednh.<\/li>\n<li dir=\"ltr\">\u0110\u1ec3 t\u00ednh to\u00e1n ch\u00ednh x\u00e1c chu vi h\u00ecnh vu\u00f4ng, c\u1ea7n\u00a0ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c ph\u00e9p t\u00ednh \u0111\u01a1n gi\u1ea3n\u00a0nh\u01b0 c\u1ed9ng, tr\u1eeb, nh\u00e2n, chia. C\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p t\u00ednh ch\u00ednh x\u00e1c \u0111\u1ec3 tr\u00e1nh sai s\u00f3t.<\/li>\n<li dir=\"ltr\">Ngo\u00e0i c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng, c\u1ea7n n\u1eafm v\u1eefng th\u00eam ki\u1ebfn th\u1ee9c v\u1ec1\u00a0di\u1ec7n t\u00edch h\u00ecnh vu\u00f4ng.<\/li>\n<li dir=\"ltr\">Tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u t\u00ednh to\u00e1n, c\u1ea7n\u00a0\u0111\u1ecdc k\u1ef9 \u0111\u1ec1 b\u00e0i\u00a0\u0111\u1ec3 n\u1eafm \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u c\u1ee7a b\u00e0i t\u1eadp. Tr\u00e1nh tr\u01b0\u1eddng h\u1ee3p \u0111\u1ecdc l\u01b0\u1edbt qua \u0111\u1ec1 b\u00e0i, d\u1eabn \u0111\u1ebfn vi\u1ec7c hi\u1ec3u sai y\u00eau c\u1ea7u c\u1ee7a b\u00e0i t\u1eadp v\u00e0 l\u00e0m sai.<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chu-vi-hinh-vuong-02.jpg\" alt=\"B\u00e0i t\u1eadp v\u1ec1 chu vi c\u1ee7a h\u00ecnh vu\u00f4ng. (\u1ea2nh: Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Meo_giup_be_lam_bai_tap_tinh_chu_vi_hinh_vuong_hieu_qua\"><\/span>M\u1eb9o gi\u00fap b\u00e9 l\u00e0m b\u00e0i t\u1eadp t\u00ednh chu vi h\u00ecnh vu\u00f4ng hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1edbi b\u00e0i t\u1eadp t\u00ednh chu vi c\u1ee7a m\u1ed9t h\u00ecnh vu\u00f4ng c\u0169ng kh\u00f4ng c\u00f3 qu\u00e1 nhi\u1ec1u ki\u1ebfn th\u1ee9c kh\u00f3, nh\u01b0ng \u0111\u1ec3 gi\u00fap c\u00e1c em c\u00f3 th\u1ec3 h\u1ecdc d\u1ec5 hi\u1ec3u, l\u00e0m b\u00e0i t\u1eadp ch\u00ednh x\u00e1c h\u01a1n th\u00ec d\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00ed quy\u1ebft \u0111\u1ec3 b\u1ed1 m\u1eb9 c\u00f3 th\u1ec3 tham kh\u1ea3o:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/chu-vi-hinh-vuong-4.jpg\" alt=\"Vi\u1ec7c n\u1eafm r\u00f5 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u00ecnh vu\u00f4ng r\u1ea5t quan tr\u1ecdng. (\u1ea2nh: S\u01b0u t\u1ea7m internet)\" width=\"100%\"><\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110\u1ea3m b\u1ea3o con n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n: V\u1edbi d\u1ea1ng b\u00e0i t\u1eadp n\u00e0y b\u1ed1 m\u1eb9 c\u1ea7n \u0111\u1ea3m b\u1ea3o con \u0111\u00e3 bi\u1ebft th\u1ebf n\u00e0o l\u00e0 h\u00ecnh vu\u00f4ng, c\u00f4ng th\u1ee9c t\u00ednh chu vi, di\u1ec7n t\u00edch, c\u00e1c k\u00fd hi\u1ec7u trong c\u00f4ng th\u1ee9c, c\u00e1c b\u01b0\u1edbc gi\u1ea3i b\u00e0i t\u1eadp,\u2026<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C\u00f9ng con th\u1ef1c h\u00e0nh nhi\u1ec1u h\u01a1n: Vi\u1ec7c th\u1ef1c h\u00e0nh l\u00e0m b\u00e0i t\u1eadp li\u00ean quan th\u01b0\u1eddng xuy\u00ean sau m\u1ed7i bu\u1ed5i h\u1ecdc, ch\u01a1i tr\u00f2 ch\u01a1i li\u00ean quan,\u2026 s\u1ebd t\u0103ng s\u1ef1 h\u1ee9ng th\u00fa v\u00e0 gi\u00fap vi\u1ec7c ghi nh\u1edb c\u1ee7a b\u00e9 t\u1ed1t h\u01a1n.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Y\u00eau c\u1ea7u con \u0111\u1ecdc k\u1ef9 \u0111\u1ec1 b\u00e0i: V\u1edbi b\u00e0i t\u1eadp t\u00ednh chu vi s\u1ebd c\u00f3 nhi\u1ec1u d\u1ea1ng to\u00e1n kh\u00e1c nhau, n\u00ean b\u1ed1 m\u1eb9 c\u1ea7n y\u00eau c\u1ea7u con ph\u00e2n t\u00edch k\u1ef9 \u0111\u1ec1 b\u00e0i, t\u1eeb vi\u1ec7c \u0111\u1ec1 b\u00e0i cho g\u00ec? Y\u00eau c\u1ea7u g\u00ec? \u0111\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i to\u00e1n ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H\u1ecdc to\u00e1n h\u00ecnh th\u00fa v\u1ecb c\u00f9ng\u00a0Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math:\u00a0\u0110\u00e2y l\u00e0 \u1ee9ng d\u1ee5ng d\u1ea1y h\u1ecdc to\u00e1n ti\u1ebfng Anh \u0111\u01b0\u1ee3c h\u00e0ng tri\u1ec7u b\u1ed1 m\u1eb9 tin d\u00f9ng, nh\u1edd ph\u01b0\u01a1ng ph\u00e1p d\u1ea1y h\u1ecdc t\u00edch c\u1ef1c \u0111\u1ec3 b\u00e9 hi\u1ec3u g\u1ed1c r\u1ec5 b\u00e0i to\u00e1n, h\u1ecdc th\u00f4ng qua tr\u00f2 ch\u01a1i v\u00e0 d\u00f9ng s\u00e1ch b\u00e0i t\u1eadp b\u1ed5 tr\u1ee3. Qua \u0111\u00f3 gi\u00fap b\u00e9 n\u1eafm v\u1eefng ki\u1ebfn th\u1ee9c to\u00e1n h\u1ecdc, c\u0169ng nh\u01b0 gi\u00fap b\u1ed1 m\u1eb9 b\u1edbt c\u1ef1c nh\u1ecdc h\u01a1n trong vi\u1ec7c d\u1ea1y con tr\u1ebb.<\/p>\n<\/li>\n<\/ul>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/bs-chu-vi-hinh-vuong.jpg\" alt=\"Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef Math - \u1ee8ng d\u1ee5ng h\u1ecdc to\u00e1n b\u1eb1ng ti\u1ebfng Anh s\u1ed1 1 cho tr\u1ebb m\u1ea7m non &amp; ti\u1ec3u h\u1ecdc. (\u1ea2nh: Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef)\" width=\"100%\"><\/p>\n<p>\u0110\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n t\u1ed1t nh\u1ea5t, ba m\u1eb9 h\u00e3y li\u00ean h\u1ec7 Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef th\u00f4ng qua t\u1ed5ng \u0111\u00e0i 1900 63 60 52. Ho\u1eb7c \u0111\u1ec3 l\u1ea1i th\u00f4ng tin ngay T\u1ea0I \u0110\u00c2Y \u0111\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u \u01b0u \u0111\u00e3i l\u00ean \u0111\u1ebfn 40% v\u00e0 h\u00e0ng ng\u00e0n t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp Mi\u1ec5n Ph\u00ed.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ung_dung_cua_cong_thuc_tinh_chu_vi_hinh_vuong_trong_thuc_tien\"><\/span>\u1ee8ng d\u1ee5ng c\u1ee7a c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng trong th\u1ef1c ti\u1ec5n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Hi\u1ec7n nay, c\u00e1ch t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng kh\u00f4ng ch\u1ec9 trong to\u00e1n h\u1ecdc m\u00e0 c\u00f2n trong th\u1ef1c ti\u1ec5n. Ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Trong_linh_vuc_thiet_ke_va_hinh_hoc\"><\/span>Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf v\u00e0 h\u00ecnh h\u1ecdc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ng\u00e0y nay, vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c chu vi c\u1ee7a h\u00ecnh vu\u00f4ng d\u00f9ng \u0111\u1ec3 t\u00ednh to\u00e1n nhi\u1ec1u thu\u1ed9c t\u00ednh kh\u00e1c nhau c\u1ee7a h\u00ecnh h\u1ecdc nh\u01b0 t\u00ecm \u0111\u1ed9 d\u00e0i c\u00e1c \u0111\u01b0\u1eddng ch\u00e9o, t\u00ednh di\u1ec7n t\u00edch, x\u00e1c \u0111\u1ecbnh c\u00e1c g\u00f3c trong h\u00ecnh vu\u00f4ng d\u1ef1a v\u00e0o c\u00e1c c\u00f4ng th\u1ee9c li\u00ean quan.<\/p>\n<p>C\u00f2n trong x\u00e2y d\u1ef1ng v\u00e0 thi\u1ebft k\u1ebf, c\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 v\u1ebd b\u1ea3n v\u1ebd k\u1ef9 thu\u1eadt, \u0111o l\u01b0\u1eddng, x\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch, k\u00edch th\u01b0\u1edbc c\u1ea1nh trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng v\u00e0 thi\u1ebft k\u1ebf.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ung_dung_trong_cac_bai_toan_thuc_tien_khac\"><\/span>\u1ee8ng d\u1ee5ng trong c\u00e1c b\u00e0i to\u00e1n th\u1ef1c ti\u1ec5n kh\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>T\u00e0i ch\u00ednh, kinh doanh: D\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c tr\u00ean c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c chi ph\u00ed v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, h\u00e0ng r\u00e0o xung quanh m\u1ed9t m\u1ea3nh \u0111\u1ea5t h\u00ecnh vu\u00f4ng.<\/li>\n<li>Qu\u1ea3n l\u00fd, \u0111\u1ecbnh v\u1ecb: D\u1ef1a v\u00e0o c\u00e1ch t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng d\u1ec5 d\u00e0ng t\u00ednh to\u00e1n, \u0111o l\u01b0\u1ee3ng hay x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed trong h\u1ec7 th\u1ed1ng b\u1ea3n \u0111\u1ed3 \u0111\u1ecba l\u00fd hay \u0111\u1ecbnh v\u1ecb to\u00e0n c\u1ea7u GPS.<\/li>\n<li>C\u00f4ng ngh\u1ec7, l\u1eadp tr\u00ecnh: M\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng, ph\u1ea7n m\u1ec1m hi\u1ec7n nay c\u00f2n \u1ee9ng d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ec3 t\u1ea1o n\u00ean c\u00f4ng c\u1ee5 t\u00ednh to\u00e1n ch\u00ednh x\u00e1c h\u01a1n nh\u01b0 t\u00ednh di\u1ec7n t\u00edch v\u00f9ng \u0111\u1ea5t h\u00ecnh vu\u00f4ng, v\u00f9ng \u1ea3nh trong x\u1eed l\u00fd \u1ea3nh,\u2026 hay nh\u1eefng thu\u1eadt to\u00e1n trong l\u1eadp tr\u00ecnh h\u00ecnh h\u1ecdc.<\/li>\n<\/ul>\n<p class=\"MsoNormal\" style=\"text-align: justify;line-height: 150%\">Khi n\u1eafm r\u00f5 \u0111\u01b0\u1ee3c c\u00f4ng th\u1ee9c t\u00ednh chu vi c\u1ee7a c\u00e1c h\u00ecnh h\u1ecdc n\u00f3i chung, h\u00ecnh vu\u00f4ng n\u00f3i ri\u00eang th\u00ec m\u1ecdi ng\u01b0\u1eddi s\u1ebd th\u1ea5y ch\u00fang \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ea5t nhi\u1ec1u trong th\u1ef1c ti\u1ec5n, gi\u00fap gi\u1ea3i quy\u1ebft nhi\u1ec1u v\u1ea5n \u0111\u1ec1 li\u00ean quan t\u1edbi h\u00ecnh vu\u00f4ng d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<\/p>\n<p dir=\"ltr\">Ch\u1eafc h\u1eb3n v\u1edbi nh\u1eefng chia s\u1ebb tr\u00ean, c\u00e1c em ho\u00e0n to\u00e0n \u0111\u00e3 n\u1eafm \u0111\u01b0\u1ee3c c\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng. V\u1edbi c\u00f4ng th\u1ee9c \u0111\u01a1n gi\u1ea3n, n\u00ean h\u1ecdc sinh ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng ghi nh\u1edb v\u00e0 \u00e1p d\u1ee5ng ch\u00ednh x\u00e1c. \u0110\u1eebng qu\u00ean l\u1ef1a ch\u1ecdn Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111\u1ec3 gi\u00fap vi\u1ec7c h\u1ecdc to\u00e1n c\u1ee7a b\u00e9 tr\u1edf n\u00ean th\u00fa v\u1ecb v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n nh\u00e9.<\/p>\n<p>                                    \u00a0\u00a0T\u00e0i li\u1ec7u tham kh\u1ea3o<\/p>\n<p>Perimeter of Square<\/p>\n<p>https:\/\/byjus.com\/maths\/perimeter-of-square<\/p>\n<p>Perimeter of Square<\/p>\n<p>https:\/\/www.cuemath.com\/measurement\/perimeter-of-square\/<\/p>\n<p>Ngu\u1ed3n: <a href=\"https:\/\/www.ckconitsha.com\/vn\/\">https:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng th\u1ee9c t\u00ednh chu vi h\u00ecnh vu\u00f4ng th\u1ef1c ch\u1ea5t kh\u00f4ng qu\u00e1 kh\u00f3, khi \u0111\u00e2y l\u00e0 h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n v\u00e0 c\u00f3 c\u00e1ch t\u00ednh \u0111\u01a1n gi\u1ea3n nh\u1ea5t. Ch\u1ec9 v\u1edbi gi\u00e1 tr\u1ecb c\u1ea1nh h\u00ecnh vu\u00f4ng cho tr\u01b0\u1edbc s\u1ebd t\u00ednh \u0111\u01b0\u1ee3c chu vi. H\u00e3y c\u00f9ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef t\u00ecm hi\u1ec3u r\u00f5 h\u01a1n ngay trong&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-14045","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14045","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=14045"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14045\/revisions"}],"predecessor-version":[{"id":16768,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14045\/revisions\/16768"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=14045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=14045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=14045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}