{"id":14201,"date":"2025-06-07T03:29:21","date_gmt":"2025-06-06T20:29:21","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=14201"},"modified":"2025-07-04T07:10:04","modified_gmt":"2025-07-04T00:10:04","slug":"chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/","title":{"rendered":"Chu vi h\u00ecnh thang c\u00e2n: C\u00f4ng th\u1ee9c, c\u00e1ch t\u00ednh v\u00e0 b\u00e0i t\u1eadp v\u00ed d\u1ee5"},"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\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Xem_xet_ly_thuyet_hinh_thang\" >Xem x\u00e9t l\u00fd thuy\u1ebft h\u00ecnh thang<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Hinh_thang_hinh_thang_la_gi\" >H\u00ecnh thang h\u00ecnh thang l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Tinh_chat_cua_hinh_thang\" >T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh thang<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Dau_hieu_trong_luong_hinh_thang\" >D\u1ea5u hi\u1ec7u tr\u1ecdng l\u01b0\u1ee3ng h\u00ecnh thang<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Cong_thuc_tinh_toan_chu_vi_cua_hinh_thang\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Vi_du_ve_tinh_toan_chu_vi_cua_thang_do\" >V\u00ed d\u1ee5 v\u1ec1 t\u00ednh to\u00e1n chu vi c\u1ee7a thang \u0111o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-thang-can-cong-thuc-cach-tinh-va-bai-tap-vi-du\/#Cac_ung_dung_thuc_te_cua_quy_mo_cua_chu_vi_hinh_thang\" >C\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a quy m\u00f4 c\u1ee7a chu vi h\u00ecnh thang<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a chu vi h\u00ecnh thang trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y? Trong b\u00e0i vi\u1ebft n\u00e0y, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd cung c\u1ea5p cho b\u1ea1n m\u1ed9t c\u00e1i nh\u00ecn s\u00e2u s\u1eafc h\u01a1n trong kh\u00e1i ni\u1ec7m n\u00e0y, c\u00f9ng v\u1edbi c\u00f4ng th\u1ee9c v\u00e0 c\u00e1ch \u00e1p d\u1ee5ng n\u00f3 v\u00e0o c\u00e1c b\u00e0i t\u1eadp v\u00ed d\u1ee5 th\u1ef1c t\u1ebf. H\u00ecnh thang c\u00e2n kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc tr\u1eebu t\u01b0\u1ee3ng, m\u00e0 c\u00f2n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c. H\u00e3y kh\u00e1m ph\u00e1 ki\u1ebfn \u200b\u200bth\u1ee9c th\u00fa v\u1ecb ngay trong b\u00e0i vi\u1ebft n\u00e0y!<\/p>\n<p>                        Xem t\u1ea5t c\u1ea3<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xem_xet_ly_thuyet_hinh_thang\"><\/span>Xem x\u00e9t l\u00fd thuy\u1ebft h\u00ecnh thang<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Tr\u01b0\u1edbc khi \u0111i v\u00e0o c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a h\u00ecnh thang c\u00e2n, h\u00e3y xem x\u00e9t l\u00e0 m\u1ed9t s\u1ed1 l\u00fd thuy\u1ebft v\u1ec1 h\u00ecnh thang m\u00e0 h\u1ecdc sinh c\u1ea7n nh\u1edb.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hinh_thang_hinh_thang_la_gi\"><\/span>H\u00ecnh thang h\u00ecnh thang l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Trapezoid l\u00e0 g\u00ec? H\u00ecnh thang l\u00e0 m\u1ed9t h\u00ecnh t\u1ee9 gi\u00e1c v\u1edbi m\u1ed9t c\u1eb7p c\u1ea1nh song song v\u00e0 hai c\u1eb7p c\u00f2n l\u1ea1i kh\u00f4ng song song. C\u1ee5 th\u1ec3, c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t c\u1ee7a h\u00ecnh thang bao g\u1ed3m: h\u00ecnh thang, h\u00ecnh thang vu\u00f4ng, h\u00ecnh b\u00ecnh h\u00e0nh, h\u00ecnh ch\u1eef nh\u1eadt, &#8230;<\/p>\n<p dir=\"ltr\">H\u00ecnh thang h\u00ecnh thang l\u00e0 g\u00ec? H\u00ecnh thang l\u00e0 m\u1ed9t h\u00ecnh thang \u0111\u1eb7c bi\u1ec7t v\u1edbi hai g\u00f3c li\u1ec1n k\u1ec1 v\u1edbi m\u1ed9t \u0111\u00e1y b\u1eb1ng nhau. <em>(Nh\u01b0 th\u1ec3 hi\u1ec7n trong h\u00ecnh minh h\u1ecda)<\/em><\/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\/1-chu-vi-hinh-thang-can.png\" alt=\"Thang \u0111o h\u00ecnh thang. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tinh_chat_cua_hinh_thang\"><\/span>T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh thang<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 thu\u1ed9c t\u00ednh c\u1ee7a h\u00ecnh thang m\u00e0 b\u1ea1n c\u1ea7n ghi nh\u1edb:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hai c\u1ea1nh c\u1ee7a h\u00ecnh thang \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hai \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh thang c\u0169ng b\u1eb1ng nhau.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Hai g\u00f3c li\u1ec1n k\u1ec1 v\u1edbi \u0111\u00e1y c\u1ee7a h\u00ecnh thang l\u00e0 b\u1eb1ng nhau.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a h\u00ecnh thang l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua \u0111i\u1ec3m gi\u1eefa c\u1ee7a hai c\u1ea1nh d\u01b0\u1edbi c\u00f9ng.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">C\u1ea7n l\u01b0u \u00fd r\u1eb1ng m\u1ed9t h\u00ecnh thang c\u00f3 hai m\u1eb7t b\u1eb1ng nhau kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 h\u00ecnh thang, b\u1edfi v\u00ec h\u00ecnh thang h\u00ecnh thang c\u0169ng ph\u1ea3i xem x\u00e9t c\u00e1c d\u1ea5u hi\u1ec7u kh\u00e1c, \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y ngay b\u00ean d\u01b0\u1edbi.<\/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\u1eebng b\u1ecf l\u1ee1 !!<\/p>\n<p style=\"text-align: center\">Ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc b\u1eb1ng ti\u1ebfng Anh, gi\u00fap ph\u00e1t tri\u1ec3n t\u01b0 duy theo c\u00e1ch to\u00e0n di\u1ec7n nh\u1ea5t.<\/p>\n<p style=\"text-align: center\">Nh\u1eadn t\u1ed1i \u0111a 40% \u01b0u \u0111\u00e3i ngay t\u1ea1i \u0111\u00e2y!<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=\"Dau_hieu_trong_luong_hinh_thang\"><\/span>D\u1ea5u hi\u1ec7u tr\u1ecdng l\u01b0\u1ee3ng h\u00ecnh thang<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Hai d\u1ea5u hi\u1ec7u c\u1ee5 th\u1ec3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00ecnh thang:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D\u1ea5u hi\u1ec7u 1 &#8211; Hai g\u00f3c li\u1ec1n k\u1ec1 v\u1edbi \u0111\u00e1y b\u1eb1ng nhau: m\u1ed9t h\u00ecnh thang \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u01b0\u1ee3c c\u00e2n khi c\u00f3 hai g\u00f3c \u1edf hai b\u00ean c\u1ee7a \u0111\u00e1y, b\u1eb1ng nhau. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 khi b\u1ea1n \u0111o g\u00f3c \u0111\u01b0\u1ee3c t\u1ea1o b\u1edfi ph\u00eda d\u01b0\u1edbi v\u00e0 m\u1ed9t b\u00ean, sau \u0111\u00f3 \u0111o g\u00f3c \u0111\u01b0\u1ee3c t\u1ea1o b\u1eb1ng ph\u00eda d\u01b0\u1edbi v\u00e0 ph\u00eda b\u00ean kia, hai g\u00f3c n\u00e0y s\u1ebd c\u00f3 c\u00f9ng gi\u00e1 tr\u1ecb.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D\u1ea5u hi\u1ec7u 2 &#8211; Hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau: h\u00ecnh thang l\u00e0 khi c\u00f3 hai \u0111\u01b0\u1eddng ch\u00e9o c\u00f3 chi\u1ec1u d\u00e0i b\u1eb1ng nhau. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ph\u00e2n \u0111o\u1ea1n k\u1ebft n\u1ed1i hai \u0111\u1ec9nh kh\u00f4ng h\u1ee3p l\u00fd c\u1ee7a h\u00ecnh thang t\u1ef7 l\u1ec7 c\u00f3 c\u00f9ng chi\u1ec1u d\u00e0i.<\/p>\n<\/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\/2-chu-vi-hinh-thang-can.png\" alt=\"D\u1ea5u hi\u1ec7u tr\u1ecdng l\u01b0\u1ee3ng h\u00ecnh thang. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_chu_vi_cua_hinh_thang\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Chu vi h\u00ecnh thang l\u00e0 t\u1ed5ng chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u00e1y v\u00e0 hai c\u1ea1nh.<\/p>\n<p dir=\"ltr\">\u0110\u1ec3 t\u00ednh chu vi c\u1ee7a h\u00ecnh thang, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c sau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = A + B + (2 XC)<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">P l\u00e0 m\u1ed9t chu vi h\u00ecnh thang.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A v\u00e0 B l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u00e1y.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C l\u00e0 chi\u1ec1u d\u00e0i b\u00ean.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5:<\/p>\n<p dir=\"ltr\">Cho ABCD h\u00ecnh thang, v\u1edbi AB = 10cm, CD = 15cm, b\u00ean c\u1ea1nh BC = 8cm. T\u00ednh chu vi c\u1ee7a h\u00ecnh thang ABCD.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 10 + 15 + (2 x 8) = 41 cm<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Chu vi h\u00ecnh thang ABCD l\u00e0 41 cm.<\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi h\u00ecnh thang c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho h\u00ecnh thang th\u00f4ng th\u01b0\u1eddng.<\/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\/3-chu-vi-hinh-thang-can.png\" alt=\"C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi h\u00ecnh thang. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">B\u00ean c\u1ea1nh c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a thang \u0111o, b\u1ea1n c\u0169ng c\u1ea7n ph\u1ea3i nh\u1edb m\u1ed9t c\u00f4ng th\u1ee9c quan tr\u1ecdng kh\u00e1c kh\u00f4ng k\u00e9m, \u0111\u00f3 l\u00e0 khu v\u1ef1c h\u00ecnh thang. C\u1ee5 th\u1ec3 nh\u01b0 sau:<\/p>\n<p dir=\"ltr\">Khu v\u1ef1c h\u00ecnh thang trung b\u00ecnh c\u1ed9ng v\u1edbi hai c\u01a1 s\u1edf c\u00f3 chi\u1ec1u cao.<\/p>\n<p dir=\"ltr\">\u0110\u1ec3 t\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh thang, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c sau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">S = (a + b)\/2 xh<\/p>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">S l\u00e0 khu v\u1ef1c h\u00ecnh thang.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">A v\u00e0 B l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a \u0111\u00e1y.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">H l\u00e0 chi\u1ec1u cao h\u00ecnh thang.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5:<\/p>\n<p dir=\"ltr\">Cho ABCD h\u00ecnh thang, v\u1edbi AB = 10cm, CD = 15cm, chi\u1ec1u cao h = 8cm. T\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh thang ABCD.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n di\u1ec7n t\u00edch h\u00ecnh thang, ch\u00fang t\u00f4i c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">S = (10 + 15)\/2 x 8 = 100 cm2<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">ABCD di\u1ec7n t\u00edch h\u00ecnh thang l\u00e0 100 cm2.<\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n di\u1ec7n t\u00edch h\u00ecnh thang c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho h\u00ecnh thang b\u00ecnh th\u01b0\u1eddng.<\/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\/4-chu-vi-hinh-thang-can.png\" alt=\"C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n thang \u0111o h\u00ecnh thang. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Vi_du_ve_tinh_toan_chu_vi_cua_thang_do\"><\/span>V\u00ed d\u1ee5 v\u1ec1 t\u00ednh to\u00e1n chu vi c\u1ee7a thang \u0111o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang c\u00e2n:<\/p>\n<p dir=\"ltr\">B\u00e0i 1: \u0110\u01b0a cho h\u00ecnh thang EFGH v\u1edbi EF = 12cm, Gh = 14cm v\u00e0 b\u00ean c\u1ea1nh EH = 7cm. T\u00ednh chu vi c\u1ee7a h\u00ecnh thang Efgh.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 12 + 14 + (2 x 7) = 40 cm<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Kh\u1ed1i chu vi h\u00ecnh thang efgh l\u00e0 40 cm.<\/p>\n<p dir=\"ltr\">B\u00e0i 2: Cung c\u1ea5p cho h\u00ecnh thang IJKL v\u1edbi IJ = 20cm, KL = 25cm v\u00e0 b\u00ean IK = 15cm. T\u00ednh chu vi h\u00ecnh thang IJKL.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 20 + 25 + (2 x 15) = 75 cm<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Chu vi h\u00ecnh thang IJKL l\u00e0 75 cm.<\/p>\n<p dir=\"ltr\">B\u00e0i 3: H\u00ecnh thang c\u00f3 hai c\u1ea1nh d\u01b0\u1edbi c\u00f9ng 8cm v\u00e0 10cm, b\u00ean l\u00e0 6cm. T\u00ednh chu vi c\u1ee7a n\u00f3.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 8 + 10 + (2 x 6) = 30 cm<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Chu vi h\u00ecnh thang l\u00e0 30 cm.<\/p>\n<p dir=\"ltr\">B\u00e0i 4: Cung c\u1ea5p c\u00e2n n\u1eb7ng h\u00ecnh thang v\u1edbi hai c\u1ea1nh d\u01b0\u1edbi c\u00f9ng 11cm v\u00e0 13cm, d\u00e0i 9cm. T\u00ednh chu vi c\u1ee7a n\u00f3.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 11 + 13 + (2 x 9) = 42 cm<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Chu vi h\u00ecnh thang l\u00e0 42 cm.<\/p>\n<p dir=\"ltr\">B\u00e0i 5: H\u00ecnh thang c\u00f3 hai c\u1ea1nh d\u01b0\u1edbi 5cm v\u00e0 6cm, b\u00ean d\u00e0i 4cm. T\u00ednh chu vi c\u1ee7a n\u00f3.<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Ph\u1ea7n th\u01b0\u1edfng:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Theo c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh thang, ch\u00fang ta c\u00f3:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">P = 5 + 6 + (2 x 4) = 19 cm<\/p>\n<p dir=\"ltr\" style=\"text-align: center\">Chu vi h\u00ecnh thang l\u00e0 19 cm.<\/p>\n<p dir=\"ltr\">Xem th\u00eam:<\/p>\n<ol>\n<li dir=\"ltr\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math &#8211; \u1ee8ng d\u1ee5ng to\u00e1n h\u1ecdc b\u1eb1ng ti\u1ebfng Anh s\u1ed1 1 cho tr\u1ebb m\u1eabu gi\u00e1o &amp; tr\u01b0\u1eddng ti\u1ec3u h\u1ecdc<\/li>\n<li dir=\"ltr\">C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a gi\u1ea3i ph\u00e1p b\u00ecnh th\u01b0\u1eddng, vu\u00f4ng, c\u00e2n v\u00e0 \u0111\u01a1n gi\u1ea3n<\/li>\n<\/ol>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_ung_dung_thuc_te_cua_quy_mo_cua_chu_vi_hinh_thang\"><\/span>C\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a quy m\u00f4 c\u1ee7a chu vi h\u00ecnh thang<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Chu vi c\u1ee7a h\u00ecnh thang c\u00f3 nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau, ch\u1eb3ng h\u1ea1n nh\u01b0:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u0110o l\u01b0\u1eddng v\u00e0 x\u00e2y d\u1ef1ng: Thang \u0111o c\u1ee7a h\u00ecnh thang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o chi\u1ec1u d\u00e0i c\u1ee7a h\u00ecnh d\u1ea1ng h\u00ecnh thang, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e1i nh\u00e0, s\u00e0n nh\u00e0, &#8230;<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\" style=\"padding-left: 40px\">V\u00ed d\u1ee5, \u0111\u1ec3 \u0111o chi\u1ec1u d\u00e0i c\u1ee7a m\u00e1i nh\u00e0, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o \u0111\u1ec3 \u0111o chu vi c\u1ee7a m\u00e1i nh\u00e0. Sau \u0111\u00f3, s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a h\u00ecnh thang \u0111\u1ec3 t\u00ednh chi\u1ec1u d\u00e0i c\u1ee7a m\u1ed7i b\u00ean c\u1ee7a m\u00e1i nh\u00e0.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda: H\u00ecnh thang c\u00e2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thi\u1ebft k\u1ebf c\u00e1c v\u1eadt ph\u1ea9m theo h\u00ecnh thang, ch\u1eb3ng h\u1ea1n nh\u01b0 t\u00fai, kh\u0103n tr\u1ea3i b\u00e0n, v.v.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\" style=\"padding-left: 40px\">V\u00ed d\u1ee5, \u0111\u1ec3 thi\u1ebft k\u1ebf m\u1ed9t t\u00fai x\u00e1ch h\u00ecnh thang, ng\u01b0\u1eddi ta c\u1ea7n t\u00ednh to\u00e1n chu vi c\u1ee7a t\u00fai \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a t\u00fai.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Thi\u1ebft k\u1ebf n\u1ed9i th\u1ea5t: H\u00ecnh thang c\u00e2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thi\u1ebft k\u1ebf \u0111\u1ed3 n\u1ed9i th\u1ea5t v\u1edbi h\u00ecnh d\u1ea1ng h\u00ecnh thang, ch\u1eb3ng h\u1ea1n nh\u01b0 gi\u00e1 s\u00e1ch, b\u00e0n v\u00e0 gh\u1ebf, &#8230;<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\" style=\"padding-left: 40px\">V\u00ed d\u1ee5, \u0111\u1ec3 thi\u1ebft k\u1ebf m\u1ed9t k\u1ec7 s\u00e1ch h\u00ecnh thang, ng\u01b0\u1eddi ta c\u1ea7n t\u00ednh to\u00e1n chu vi c\u1ee7a k\u1ec7 s\u00e1ch \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a k\u1ec7 s\u00e1ch.<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Thi\u1ebft k\u1ebf th\u1eddi trang: Quy m\u00f4 c\u1ee7a h\u00ecnh thang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 thi\u1ebft k\u1ebf trang ph\u1ee5c h\u00ecnh d\u1ea1ng h\u00ecnh thang, ch\u1eb3ng h\u1ea1n nh\u01b0 v\u00e1y, \u00e1o s\u01a1 mi, &#8230;<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\" style=\"padding-left: 40px\">V\u00ed d\u1ee5, \u0111\u1ec3 thi\u1ebft k\u1ebf m\u1ed9t chi\u1ebfc v\u00e1y h\u00ecnh thang, ng\u01b0\u1eddi ta c\u1ea7n t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00e1y \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc c\u1ee7a v\u00e1y.<\/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\/5-chu-vi-hinh-thang-can.png\" alt=\"\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a chu vi h\u00ecnh thang. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p>Nh\u00ecn chung, chu vi c\u1ee7a h\u00ecnh thang l\u00e0 m\u1ed9t ki\u1ebfn \u200b\u200bth\u1ee9c to\u00e1n h\u1ecdc quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf trong cu\u1ed9c s\u1ed1ng. Hy v\u1ecdng r\u1eb1ng, th\u00f4ng tin m\u00e0 Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef cung c\u1ea5p l\u00e0 h\u1eefu \u00edch cho b\u1ea1n. Ki\u1ec3m tra c\u00e1c b\u00e0i vi\u1ebft h\u1eefu \u00edch kh\u00e1c trong ph\u1ea7n To\u00e1n h\u1ecdc c\u1ee7a ch\u00fang t\u00f4i!<\/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>B\u1ea1n \u0111\u00e3 bao gi\u1edd t\u1ef1 h\u1ecfi v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a chu vi h\u00ecnh thang trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y? Trong b\u00e0i vi\u1ebft n\u00e0y, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef s\u1ebd cung c\u1ea5p cho b\u1ea1n m\u1ed9t c\u00e1i nh\u00ecn s\u00e2u s\u1eafc h\u01a1n trong kh\u00e1i ni\u1ec7m n\u00e0y, c\u00f9ng v\u1edbi c\u00f4ng th\u1ee9c v\u00e0 c\u00e1ch \u00e1p d\u1ee5ng n\u00f3&#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-14201","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14201","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=14201"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14201\/revisions"}],"predecessor-version":[{"id":17196,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14201\/revisions\/17196"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=14201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=14201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=14201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}