{"id":14091,"date":"2025-06-06T12:09:58","date_gmt":"2025-06-06T05:09:58","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=14091"},"modified":"2025-07-04T01:50:04","modified_gmt":"2025-07-03T18:50:04","slug":"chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/","title":{"rendered":"Chu vi h\u00ecnh tr\u00f2n l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c v\u00e0 b\u00e0i t\u1eadp v\u1eadn d\u1ee5ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t"},"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-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Xem_xet_kien_%E2%80%8B%E2%80%8Bthuc_tron\" >Xem x\u00e9t ki\u1ebfn \u200b\u200bth\u1ee9c tr\u00f2n<\/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\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Cong_thuc_tinh_toan_chu_vi_cua_vong_tron\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Cong_thuc_tinh_toan_chu_vi_cua_vong_tron-2\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n<\/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-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Moi_quan_he_voi_PI_%CF%80\" >M\u1ed1i quan h\u1ec7 v\u1edbi PI (\u03c0)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Cach_tinh_duong_kinh_cua_vong_tron\" >C\u00e1ch t\u00ednh \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n<\/a><\/li><\/ul><\/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-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Mot_so_loai_chu_vi_cua_chu_vi_vong_tron_la_pho_bien\" >M\u1ed9t s\u1ed1 lo\u1ea1i chu vi c\u1ee7a chu vi v\u00f2ng tr\u00f2n l\u00e0 ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Mau_1_Cho_ban_kinh_duong_kinh_cua_chu_vi_cua_vong_tron\" >M\u1eabu 1: Cho b\u00e1n k\u00ednh, \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a chu vi c\u1ee7a v\u00f2ng tr\u00f2n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Mau_2_Cho_chu_vi_cua_vong_tron_tinh_toan_ban_kinh_va_duong_kinh\" >M\u1eabu 2: Cho chu vi c\u1ee7a v\u00f2ng tr\u00f2n, t\u00ednh to\u00e1n b\u00e1n k\u00ednh v\u00e0 \u0111\u01b0\u1eddng k\u00ednh<\/a><\/li><\/ul><\/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\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Tap_the_duc_theo_chu_vi_cua_vong_tron_de_em_be_tap_luyen\" >T\u1eadp th\u1ec3 d\u1ee5c theo chu vi c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u1ec3 em b\u00e9 t\u1eadp 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\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Meo_de_giup_con_ban_thuc_hien_mot_bai_tap_vong_tron_hieu_qua\" >M\u1eb9o \u0111\u1ec3 gi\u00fap con b\u1ea1n th\u1ef1c hi\u1ec7n m\u1ed9t b\u00e0i t\u1eadp v\u00f2ng tr\u00f2n hi\u1ec7u qu\u1ea3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Duoc_trang_bi_mot_nen_tang_toan_hoc_vung_chac_cho_tre_em_voi_toan_hoc_khi\" >\u0110\u01b0\u1ee3c trang b\u1ecb m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#To_chuc_mot_tro_choi_toan_tron_voi_em_be_cua_ban\" >T\u1ed5 ch\u1ee9c m\u1ed9t tr\u00f2 ch\u01a1i to\u00e1n tr\u00f2n v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Thuc_hanh_thuong_xuyen_la_dieu_can_thiet\" >Th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft<\/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\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Tim_hieu_cong_thuc_de_tinh_chu_vi_cua_vong_tron_thong_qua_tho\" >T\u00ecm hi\u1ec3u c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a v\u00f2ng tr\u00f2n th\u00f4ng qua th\u01a1<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/chu-vi-hinh-tron-la-gi-cong-thuc-va-bai-tap-van-dung-day-du-nhat\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>T\u00ednh chu vi c\u1ee7a v\u00f2ng tr\u00f2n s\u1ebd kh\u00f4ng qu\u00e1 kh\u00f3 kh\u0103n, khi ch\u00fang ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c c\u00f3 th\u1ec3 t\u00ednh to\u00e1n ho\u00e0n to\u00e0n nhanh ch\u00f3ng. H\u00e3y t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00f4ng th\u1ee9c, t\u1eadp th\u1ec3 d\u1ee5c v\u00e0 b\u00ed m\u1eadt h\u1ecdc t\u1eadp hi\u1ec7u qu\u1ea3 h\u01a1n trong b\u00e0i vi\u1ebft sau.<\/p>\n<p>                        Xem t\u1ea5t c\u1ea3<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xem_xet_kien_%E2%80%8B%E2%80%8Bthuc_tron\"><\/span>Xem x\u00e9t ki\u1ebfn \u200b\u200bth\u1ee9c tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>M\u1ed9t v\u00f2ng tr\u00f2n l\u00e0 g\u00ec? Trong h\u00ecnh h\u1ecdc ph\u1eb3ng, m\u1ed9t h\u00ecnh tr\u00f2n l\u00e0 m\u1ed9t h\u00ecnh \u1ea3nh kh\u00e9p k\u00edn, t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec3m trong h\u00ecnh d\u1ea1ng c\u1ee7a trung t\u00e2m l\u00e0 kho\u1ea3ng kho\u1ea3ng c\u00e1ch b\u1eb1ng nhau v\u00e0 kho\u1ea3ng c\u00e1ch \u0111\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00e1n k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n.<\/p>\n<p>C\u00e1c thu\u1ed9c t\u00ednh c\u01a1 b\u1ea3n c\u1ee7a v\u00f2ng tr\u00f2n, bao g\u1ed3m:<\/p>\n<ol>\n<li>V\u00f2ng tr\u00f2n c\u00f3 m\u1ed9t t\u00ednh ch\u1ea5t \u0111\u1ed1i x\u1ee9ng tr\u00f2n: ngh\u0129a l\u00e0, n\u1ebfu ch\u00fang ta l\u1ea5y b\u1ea5t k\u1ef3 \u0111i\u1ec3m n\u00e0o tr\u00ean v\u00f2ng tr\u00f2n l\u00e0m trung t\u00e2m, ch\u00fang ta c\u00f3 th\u1ec3 v\u1ebd \u0111\u01b0\u1eddng k\u00ednh \u0111i qua \u0111i\u1ec3m \u0111\u00f3. \u0110\u01b0\u1eddng k\u00ednh n\u00e0y s\u1ebd chia v\u00f2ng tr\u00f2n th\u00e0nh hai ph\u1ea7n b\u1eb1ng nhau.<\/li>\n<li>T\u1ea5t c\u1ea3 c\u00e1c v\u00f2ng tr\u00f2n \u0111\u1ec1u t\u01b0\u01a1ng t\u1ef1 nhau: ngh\u0129a l\u00e0, n\u1ebfu ch\u00fang ta nh\u00e2n \u0111\u00f4i b\u00e1n k\u00ednh c\u1ee7a m\u1ed9t v\u00f2ng tr\u00f2n, chu vi v\u00e0 di\u1ec7n t\u00edch c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u00f3 s\u1ebd t\u0103ng g\u1ea5p \u0111\u00f4i.<\/li>\n<li>Chu vi c\u1ee7a v\u00f2ng tr\u00f2n t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi b\u00e1n k\u00ednh 2\u03c0: ngh\u0129a l\u00e0, n\u1ebfu ch\u00fang ta t\u0103ng g\u1ea5p \u0111\u00f4i b\u00e1n k\u00ednh c\u1ee7a m\u1ed9t v\u00f2ng tr\u00f2n, chu vi c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u00f3 s\u1ebd t\u0103ng g\u1ea5p \u0111\u00f4i.<\/li>\n<li>Di\u1ec7n t\u00edch c\u1ee7a v\u00f2ng tr\u00f2n t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi b\u00ecnh ph\u01b0\u01a1ng b\u00e1n k\u00ednh theo kh\u00f4ng \u0111\u1ed5i: ngh\u0129a l\u00e0, n\u1ebfu ch\u00fang ta t\u0103ng g\u1ea5p \u0111\u00f4i b\u00e1n k\u00ednh c\u1ee7a m\u1ed9t v\u00f2ng tr\u00f2n, di\u1ec7n t\u00edch c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u00f3 l\u00e0 b\u1ed1n l\u1ea7n.<\/li>\n<li>V\u00f2ng tr\u00f2n l\u00e0 m\u1ed9t h\u00ecnh d\u1ea1ng l\u1ed3i: ngh\u0129a l\u00e0 m\u1ecdi \u0111\u01b0\u1eddng n\u1ed1i k\u1ebft n\u1ed1i b\u1ea5t k\u1ef3 hai \u0111i\u1ec3m n\u00e0o tr\u00ean v\u00f2ng tr\u00f2n n\u1eb1m b\u00ean trong v\u00f2ng tr\u00f2n.<\/li>\n<\/ol>\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-tron-1.jpg\" alt=\"\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a h\u00ecnh tr\u00f2n \u0111\u1ec3 khi t\u00ednh to\u00e1n. (\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_vong_tron\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Chu vi h\u00ecnh tr\u00f2n l\u00e0 g\u00ec? Chu vi c\u1ee7a v\u00f2ng tr\u00f2n ho\u1eb7c v\u00f2ng tr\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u01b0\u1eddng vi\u1ec1n gi\u1edbi h\u1ea1n c\u1ee7a v\u00f2ng tr\u00f2n.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_chu_vi_cua_vong_tron-2\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Chu vi c\u1ee7a v\u00f2ng tr\u00f2n b\u1eb1ng 2 l\u1ea7n b\u00e1n k\u00ednh c\u1ee7a s\u1ed1 l\u01b0\u1ee3ng PI ho\u1eb7c \u0111\u01b0\u1eddng k\u00ednh nh\u00e2n v\u1edbi s\u1ed1 l\u01b0\u1ee3ng PI. C\u1ee5 th\u1ec3:<\/p>\n<table style=\"border-collapse: collapse;width: 100.034%;background-color: #fff4f5\" border=\"1\">\n<tr>\n<td style=\"width: 98.6181%;text-align: center\">C = dx \u03c0 ho\u1eb7c c = (rx 2) x \u03c0<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Trong \u0111\u00f3:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C l\u00e0 bi\u1ec3u t\u01b0\u1ee3ng c\u1ee7a chu vi c\u1ee7a v\u00f2ng tr\u00f2n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">R l\u00e0 b\u00e1n k\u00ednh tr\u00f2n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">D l\u00e0 \u0111\u01b0\u1eddng k\u00ednh tr\u00f2n<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u03c0 l\u00e0 h\u1eb1ng s\u1ed1 gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 3.14<\/p>\n<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Moi_quan_he_voi_PI_%CF%80\"><\/span>M\u1ed1i quan h\u1ec7 v\u1edbi PI (\u03c0)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Trong c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a h\u00ecnh tr\u00f2n, m\u1ecdi ng\u01b0\u1eddi s\u1ebd th\u1ea5y s\u1ed1 l\u01b0\u1ee3ng PI, bi\u1ec3u t\u01b0\u1ee3ng l\u00e0 \u03c0. V\u1ec1 b\u1ea3n ch\u1ea5t, gi\u00e1 tr\u1ecb c\u1ee7a \u03c0 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 3.141592653589793 &#8230; nh\u01b0ng \u0111\u1ec3 l\u00e0m cho t\u00ednh to\u00e1n d\u1ec5 d\u00e0ng h\u01a1n, s\u1ed1 l\u01b0\u1ee3ng \u03c0 l\u00e0 th\u00f4ng th\u01b0\u1eddng v\u1edbi gi\u00e1 tr\u1ecb g\u1ea7n nh\u1ea5t l\u00e0 3,14.<\/p>\n<p dir=\"ltr\">\u1ede \u0111\u00e2y, \u03c0 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 t\u1ef7 l\u1ec7 c\u1ee7a chu vi C c\u1ee7a v\u00f2ng tr\u00f2n. Ngo\u00e0i ra, v\u00ec gi\u00e1 tr\u1ecb c\u1ee7a \u03c0 kh\u00e1 d\u00e0i, c\u00f4ng th\u1ee9c c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u01a1n gi\u1ea3n h\u00f3a l\u00e0 DX 3.14.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_tinh_duong_kinh_cua_vong_tron\"><\/span>C\u00e1ch t\u00ednh \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua trung t\u00e2m c\u1ee7a v\u00f2ng tr\u00f2n, c\u0169ng nh\u01b0 ch\u00fang s\u1ebd c\u1eaft v\u00f2ng tr\u00f2n \u1edf hai \u0111i\u1ec3m tr\u00ean v\u00f2ng tr\u00f2n.<\/p>\n<p dir=\"ltr\">Th\u00f4ng th\u01b0\u1eddng, \u0111\u1ec3 t\u00ednh \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n s\u1ebd d\u1ef1a tr\u00ean b\u00e1n k\u00ednh, chu vi ho\u1eb7c di\u1ec7n t\u00edch. C\u1ee5 th\u1ec3:<\/p>\n<ul>\n<li dir=\"ltr\">N\u1ebfu b\u1ea1n bi\u1ebft c\u00e1ch b\u00e1n m\u1ed9t v\u00f2ng tr\u00f2n, c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng k\u00ednh s\u1ebd l\u00e0 b\u00e1n k\u00ednh tr\u00f9ng l\u1eb7p: D = 2R<\/li>\n<li dir=\"ltr\">N\u1ebfu b\u1ea1n bi\u1ebft chu vi c\u1ee7a v\u00f2ng tr\u00f2n, \u0111\u01b0\u1eddng k\u00ednh s\u1ebd b\u1eb1ng v\u1edbi chu vi c\u1ee7a pi: d = c\/ \u03c0<\/li>\n<li dir=\"ltr\">N\u1ebfu b\u1ea1n bi\u1ebft di\u1ec7n t\u00edch c\u1ee7a v\u00f2ng tr\u00f2n, \u0111\u01b0\u1eddng k\u00ednh s\u1ebd b\u1eb1ng hai l\u00f5i c\u1ee7a \u0111\u01a1n v\u1ecb th\u1ee9 c\u1ea5p c\u1ee7a khu v\u1ef1c chia cho s\u1ed1 PI: <img loading=\"lazy\" decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/lh4.googleusercontent.com\/nhAB_qja9Lbt0baTT3qRxtbP8kD7nKep--s0e1OOHmXV_xcXYRCTH3a5sQHfaLDBVd9iBiqt0StS8qRDdwxSb1XwC47UDuVMEPEYfJCGvQJwt62YZy_dGDTqUhotur2Izle61BmJo_pTVwolLK7zslQaKhH7LFed47NUoXhGF8V3UP4h6GAM9j729Q\" width=\"87\" height=\"49\"><\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_loai_chu_vi_cua_chu_vi_vong_tron_la_pho_bien\"><\/span>M\u1ed9t s\u1ed1 lo\u1ea1i chu vi c\u1ee7a chu vi v\u00f2ng tr\u00f2n l\u00e0 ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong qu\u00e1 tr\u00ecnh h\u1ecdc to\u00e1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u1ed1i v\u1edbi tr\u1ebb em ti\u1ec3u h\u1ecdc, ch\u00fang th\u01b0\u1eddng s\u1ebd tr\u1ea3i nghi\u1ec7m c\u00e1c h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc li\u00ean quan \u0111\u1ebfn chu vi c\u1ee7a v\u00f2ng tr\u00f2n nh\u01b0 sau:<\/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-tron-2.jpg\" alt=\"C\u00f3 nhi\u1ec1u lo\u1ea1i to\u00e1n h\u1ecdc to\u00e1n h\u1ecdc c\u1ee7a v\u00f2ng tr\u00f2n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Cho_ban_kinh_duong_kinh_cua_chu_vi_cua_vong_tron\"><\/span>M\u1eabu 1: Cho b\u00e1n k\u00ednh, \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a chu vi c\u1ee7a v\u00f2ng tr\u00f2n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">V\u1edbi h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc n\u00e0y, v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng cung c\u1ea5p c\u00e1c tham s\u1ed1 c\u1ee7a b\u00e1n k\u00ednh ho\u1eb7c \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n. V\u00ec v\u1eady, h\u1ecd ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c chu vi tr\u00ean \u0111\u1ec3 c\u00f3 th\u1ec3 t\u00ednh to\u00e1n d\u1ec5 d\u00e0ng v\u00e0 ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: T\u00ednh chu vi c\u1ee7a v\u00f2ng tr\u00f2n v\u1edbi b\u00e1n k\u00ednh r = 5cm.<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Ph\u00e2n c\u00f4ng<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Chu vi c\u1ee7a v\u00f2ng tr\u00f2n l\u00e0:<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>5 x 2 x 3.14 = 31.4 (cm)<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Tr\u1ea3 l\u1eddi: 31,4cm<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Cho_chu_vi_cua_vong_tron_tinh_toan_ban_kinh_va_duong_kinh\"><\/span>M\u1eabu 2: Cho chu vi c\u1ee7a v\u00f2ng tr\u00f2n, t\u00ednh to\u00e1n b\u00e1n k\u00ednh v\u00e0 \u0111\u01b0\u1eddng k\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">V\u1edbi h\u00ecnh th\u1ee9c t\u1eadp th\u1ec3 d\u1ee5c n\u00e0y, h\u00ecnh th\u1ee9c \u0111\u1ea7u ti\u00ean s\u1ebd hi\u1ec3n th\u1ecb c\u00e1c tham s\u1ed1 c\u1ee7a chu vi c\u1ee7a v\u00f2ng tr\u00f2n v\u00e0 y\u00eau c\u1ea7u ch\u00fang t\u00ednh to\u00e1n \u0111\u01b0\u1eddng k\u00ednh ho\u1eb7c chu vi. V\u1ec1 gi\u1ea3i ph\u00e1p, n\u00f3 c\u0169ng s\u1ebd d\u1ef1a v\u00e0o t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp \u1edf tr\u00ean, t\u1eeb \u0111\u00f3 suy ra c\u00e1ch t\u00ednh \u0111\u01b0\u1eddng k\u00ednh, b\u00e1n k\u00ednh t\u01b0\u01a1ng \u1ee9ng nh\u01b0 sau:<\/p>\n<ul>\n<li dir=\"ltr\">C = DX 3,14 \u2192 D = C: 3.14<\/li>\n<li dir=\"ltr\">C = Rx 2 x 3.14 \u2192 R = C: 2: 3.14<\/li>\n<\/ul>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: T\u00ednh b\u00e1n k\u00ednh v\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n khi bi\u1ebft chu vi c\u1ee7a v\u00f2ng tr\u00f2n C = 18,84dm.<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Ph\u00e2n c\u00f4ng<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>B\u00e1n k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n l\u00e0:<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>18.84: 2: 3.14 = 3 (DM)<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>\u0110\u01b0\u1eddng k\u00ednh c\u1ee7a v\u00f2ng tr\u00f2n l\u00e0:<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>18.84: 3.14 = 6 (DM)<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Tr\u1ea3 l\u1eddi: B\u00e1n k\u00ednh 3dM; \u0110\u01b0\u1eddng k\u00ednh: 6dm<\/em><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tap_the_duc_theo_chu_vi_cua_vong_tron_de_em_be_tap_luyen\"><\/span>T\u1eadp th\u1ec3 d\u1ee5c theo chu vi c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u1ec3 em b\u00e9 t\u1eadp luy\u1ec7n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Sau khi n\u1eafm b\u1eaft ch\u1eafc ch\u1eafn \u0111\u1ecbnh ngh\u0129a v\u00e0 t\u00ednh to\u00e1n chu vi tr\u00f2n v\u00e0 m\u1ed9t s\u1ed1 c\u00f4ng th\u1ee9c li\u00ean quan, h\u1ecd c\u1ea7n th\u1ef1c h\u00e0nh c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp \u0111\u1ec3 c\u1ee7ng c\u1ed1 ki\u1ebfn \u200b\u200bth\u1ee9c c\u1ee7a h\u1ecd v\u00e0 c\u1ea3i thi\u1ec7n k\u1ef9 n\u0103ng b\u00e0i t\u1eadp v\u1ec1 nh\u00e0. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn chu vi c\u1ee7a v\u00f2ng tr\u00f2n \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 tham kh\u1ea3o v\u00e0 th\u1ef1c h\u00e0nh t\u1ea1i nh\u00e0 m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3:<\/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-tron-3.jpg\" alt=\"(Ngu\u1ed3n: T\u00f3m t\u1eaft)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Meo_de_giup_con_ban_thuc_hien_mot_bai_tap_vong_tron_hieu_qua\"><\/span>M\u1eb9o \u0111\u1ec3 gi\u00fap con b\u1ea1n th\u1ef1c hi\u1ec7n m\u1ed9t b\u00e0i t\u1eadp v\u00f2ng tr\u00f2n hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">V\u1ec1 c\u01a1 b\u1ea3n, ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 chu vi c\u1ee7a v\u00f2ng tr\u00f2n c\u0169ng c\u00f3 nhi\u1ec1u b\u00e0i t\u1eadp d\u1ec5 d\u00e0ng, nh\u01b0ng c\u0169ng c\u00f3 nhi\u1ec1u b\u00e0i t\u1eadp kh\u00f3 kh\u0103n. V\u00ec v\u1eady, \u0111\u1ec3 gi\u00fap h\u1ecd chinh ph\u1ee5c lo\u1ea1i to\u00e1n h\u1ecdc n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 khi th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp ki\u1ec3m tra, c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, h\u1ecd c\u00f3 th\u1ec3 tham kh\u1ea3o c\u00e1c m\u1eb9o sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Duoc_trang_bi_mot_nen_tang_toan_hoc_vung_chac_cho_tre_em_voi_toan_hoc_khi\"><\/span>\u0110\u01b0\u1ee3c trang b\u1ecb m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u1ee9ng d\u1ee5ng to\u00e1n h\u1ecdc ti\u1ebfng Anh theo ch\u01b0\u01a1ng tr\u00ecnh GDPT cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 tr\u1ebb em ti\u1ec3u h\u1ecdc. \u1ee8ng d\u1ee5ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1eefu \u00edch \u0111\u1ec3 t\u1ea1o ra m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc \u0111\u1ec3 h\u1ed7 tr\u1ee3 v\u00e0 b\u1ed5 sung khi h\u1ecdc \u1edf tr\u01b0\u1eddng, gi\u00fap tr\u1ebb em suy ngh\u0129 tr\u1ef1c tuy\u1ebfn, l\u00e0m ch\u1ee7 ki\u1ebfn \u200b\u200bth\u1ee9c v\u00e0 y\u00eau th\u00edch m\u00f4n h\u1ecdc n\u00e0y nhi\u1ec1u h\u01a1n.<\/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-tron-4.jpg\" alt=\"V\u1edbi to\u00e1n h\u1ecdc Shining Home - Gia \u0111\u00ecnh Anh Ng\u1eef gi\u00fap tr\u1ebb chinh ph\u1ee5c to\u00e1n h\u1ecdc d\u1ec5 d\u00e0ng. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">\u0110\u01b0\u1ee3c bi\u1ebft, \u0111\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp t\u01b0 duy ti\u1ebfng Anh \u0111\u1ea7u ti\u00ean \u1edf n\u01b0\u1edbc ta, v\u1edbi v\u00f4 s\u1ed1 nh\u1eefng b\u00e0i h\u1ecdc th\u00fa v\u1ecb k\u00e8m theo c\u00e1c ho\u1ea1t \u0111\u1ed9ng m\u00e0 c\u1ea3 ch\u01a1i v\u00e0 h\u1ecdc, \u0111\u1ec3 x\u00e2y d\u1ef1ng to\u00e1n h\u1ecdc t\u00ecnh y\u00eau nhi\u1ec1u h\u01a1n.<\/p>\n<p dir=\"ltr\">C\u1ee5 th\u1ec3, m\u1ed7i b\u00e0i h\u1ecdc s\u1ebd d\u1ef1a tr\u00ean 3 ho\u1ea1t \u0111\u1ed9ng ch\u00ednh, n\u1ed9i dung \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng theo c\u00e1c lo\u1ea1i c\u00e2u h\u1ecfi \u0111\u1ec3 h\u1ecd c\u00f3 th\u1ec3 h\u1ecdc ki\u1ebfn \u200b\u200bth\u1ee9c m\u1edbi v\u00e0 xem x\u00e9t ki\u1ebfn \u200b\u200bth\u1ee9c c\u0169 nh\u01b0 sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Gi\u1edbi thi\u1ec7u l\u00e0 m\u1ed9t video h\u01b0\u1edbng d\u1eabn: Tr\u1ebb em s\u1ebd \u0111\u01b0\u1ee3c xem qua m\u1ed9t video ng\u1eafn v\u1ec1 n\u1ed9i dung s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc bao g\u1ed3m c\u00e1c kh\u00e1i ni\u1ec7m v\u00e0 b\u00e0i t\u1eadp.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Ti\u1ebfp theo l\u00e0 th\u1ef1c h\u00e0nh: Tr\u1ebb s\u01a1 sinh s\u1ebd c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o 3 ho\u1ea1t \u0111\u1ed9ng ch\u00ednh: th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp x\u00e1c \u0111\u1ecbnh, thao t\u00e1c c\u00e1c b\u00e0i t\u1eadp v\u00e0 k\u1ebft h\u1ee3p c\u1ea3 hai.<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Cu\u1ed1i c\u00f9ng: Tr\u1ebb s\u01a1 sinh s\u1ebd \u0111\u01b0\u1ee3c cung c\u1ea5p s\u1ed5 l\u00e0m vi\u1ec7c to\u00e1n h\u1ecdc kh\u1ec9 \u0111\u1ec3 th\u1ef1c h\u00e0nh.<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u1edbi Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math kh\u00f4ng ch\u1ec9 cung c\u1ea5p ki\u1ebfn \u200b\u200bth\u1ee9c kh\u00f4, nh\u00e0m ch\u00e1n, m\u00e0 c\u00f2n cung c\u1ea5p ki\u1ebfn \u200b\u200bth\u1ee9c to\u00e1n h\u1ecdc th\u00f4ng qua c\u00e1c video v\u00e0 h\u00ecnh \u1ea3nh tr\u1ef1c quan s\u1ed1ng \u0111\u1ed9ng \u0111\u1ec3 ch\u00fang c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng ghi nh\u1edb v\u00e0 li\u00ean h\u1ec7 v\u1edbi ch\u00fang t\u1ed1t h\u01a1n.<\/p>\n<p dir=\"ltr\">H\u1ee9a h\u1eb9n, v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9, m\u1ed7i gi\u1edd to\u00e1n v\u1edbi tr\u1ebb s\u1ebd l\u00e0 m\u1ed9t ni\u1ec1m vui, c\u0169ng nh\u01b0 c\u00f3 \u0111\u01b0\u1ee3c ki\u1ebfn \u200b\u200bth\u1ee9c d\u1ec5 d\u00e0ng h\u01a1n.<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math cho \u0111i\u1ec7n tho\u1ea1i Android<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math cho \u0111i\u1ec7n tho\u1ea1i iOS<\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><a href=\"https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/a><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Video gi\u1edbi thi\u1ec7u \u1ee9ng d\u1ee5ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math.<\/em><\/p>\n<table style=\"border-collapse: collapse;margin-left: auto;margin-right: auto;width: 100%;background-color: #fbeeb8\" border=\"1\">\n<tr>\n<td style=\"width: 98.5932%;text-align: center\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math &#8211; \u1ee8ng d\u1ee5ng To\u00e1n h\u1ecdc theo Ch\u01b0\u01a1ng tr\u00ecnh Gi\u00e1o d\u1ee5c M\u1edbi d\u00e0nh cho Tr\u1ebb em m\u1eabu gi\u00e1o &amp; Tr\u01b0\u1eddng ti\u1ec3u h\u1ecdc s\u1ed1 1 t\u1ea1i Vi\u1ec7t Nam. <img decoding=\"async\" style=\"margin-left: auto;margin-right: auto\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia.monkeyuni.net\/upload\/web\/img\/button_dang-ky-ngay-1.png\" width=\"185\"><\/td>\n<\/tr>\n<\/table>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"To_chuc_mot_tro_choi_toan_tron_voi_em_be_cua_ban\"><\/span>T\u1ed5 ch\u1ee9c m\u1ed9t tr\u00f2 ch\u01a1i to\u00e1n tr\u00f2n v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi tr\u1ebb em ti\u1ec3u h\u1ecdc, h\u1ea7u h\u1ebft trong s\u1ed1 h\u1ecd kh\u00e1 vui t\u01b0\u01a1i, v\u00ec v\u1eady ph\u1ee5 huynh c\u00f3 th\u1ec3 t\u1ed5 ch\u1ee9c c\u00e1c cu\u1ed9c thi v\u00e0 tr\u00f2 ch\u01a1i li\u00ean quan \u0111\u1ebfn vi\u1ec7c t\u00ednh chu vi tr\u00f2n cho tr\u1ebb tham gia. Th\u00f4ng th\u01b0\u1eddng, b\u00e0i ki\u1ec3m tra l\u00e0 chu vi ch\u00ednh x\u00e1c v\u00e0 nhanh nh\u1ea5t s\u1ebd c\u00f3 m\u1ed9t m\u00f3n qu\u00e0 \u0111\u1eb7c bi\u1ec7t.<\/p>\n<p dir=\"ltr\">V\u1edbi vi\u1ec7c t\u1ed5 ch\u1ee9c tr\u00f2 ch\u01a1i, cha m\u1eb9 c\u00f3 th\u1ec3 tham gia c\u00f9ng em b\u00e9 ho\u1eb7c m\u1eddi b\u1ea1n b\u00e8 trong c\u00f9ng l\u1edbp \u0111\u1ec3 bi\u1ebft kh\u1ea3 n\u0103ng h\u1ecdc h\u1ecfi v\u00e0 gi\u00fap con c\u00e1i h\u1ecd th\u00edch ch\u01a1i v\u00e0 h\u1ecdc h\u1ecfi nhi\u1ec1u h\u01a1n.<\/p>\n<p>Xem th\u00eam:<\/p>\n<ul>\n<li>L\u00fd thuy\u1ebft v\u00e0 c\u00e1ch l\u00e0m m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 v\u1edbi l\u1edbp 4 d\u1ec5 nh\u1ea5t<\/li>\n<li>C\u00e1ch gi\u1ea3i 4 b\u00e0i t\u1eadp to\u00e1n h\u1ecdc v\u1edbi m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp d\u1ec5 nh\u1ea5t cho em b\u00e9 c\u1ee7a b\u1ea1n<\/li>\n<li>G\u1ee3i \u00fd cho to\u00e1n h\u1ecdc c\u1ea5p 1 n\u00e2ng cao c\u00f3 h\u01b0\u1edbng d\u1eabn gi\u00fap tr\u1ebb \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t<\/li>\n<\/ul>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thuc_hanh_thuong_xuyen_la_dieu_can_thiet\"><\/span>Th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">H\u1ecdc v\u1edbi h\u00e0nh t\u00e2y lu\u00f4n l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng m\u00e0 cha m\u1eb9 n\u00ean y\u00eau c\u1ea7u con c\u00e1i h\u1ecd l\u00e0m. C\u1ee5 th\u1ec3, sau khi n\u1eafm b\u1eaft ch\u1eafc ch\u1eafn ki\u1ebfn \u200b\u200bth\u1ee9c l\u00fd thuy\u1ebft, c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n, ti\u1ebfn h\u00e0nh th\u1ef1c h\u00e0nh b\u1eb1ng c\u00e1ch l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 trong s\u00e1ch gi\u00e1o khoa, tham kh\u1ea3o nhi\u1ec1u t\u00e0i li\u1ec7u tr\u00ean internet \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c k\u1ef9 n\u0103ng gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp &#8230;<\/p>\n<p dir=\"ltr\">V\u1edbi th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean s\u1ebd gi\u00fap c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng to\u00e1n h\u1ecdc c\u1ee7a em b\u00e9, c\u00f9ng v\u1edbi vi\u1ec7c \u0111\u00e0o t\u1ea1o b\u1ea3n th\u00e2n khi h\u1ecdc r\u1ea5t t\u1ed1t cho t\u01b0\u01a1ng lai c\u1ee7a tr\u1ebb 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\/chu-vi-hinh-tron-5.jpg\" alt=\"V\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n \u0111\u1ec3 luy\u1ec7n t\u1eadp, l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 th\u01b0\u1eddng xuy\u00ean. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Tim_hieu_cong_thuc_de_tinh_chu_vi_cua_vong_tron_thong_qua_tho\"><\/span>T\u00ecm hi\u1ec3u c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a v\u00f2ng tr\u00f2n th\u00f4ng qua th\u01a1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap t\u00ecm hi\u1ec3u c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh chu vi c\u1ee7a v\u00f2ng tr\u00f2n r\u1ea5t d\u1ec5 hi\u1ec3u, d\u1ec5 nh\u1edb h\u01a1n, sau \u0111\u00e2y l\u00e0 m\u1ed9t b\u00e0i th\u01a1 m\u00e0 c\u00e1c sinh vi\u00ean truy\u1ec1n t\u1ea3i l\u1eabn nhau:<\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>V\u00f2ng tr\u00f2n \u0111\u01a1n gi\u1ea3n<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>B\u00e1n k\u00ednh vu\u00f4ng, ch\u00fang t\u00f4i nh\u00e2n ngay l\u1eadp t\u1ee9c<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Ba m\u01b0\u1eddi b\u1ed1n ph\u00eda sau<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Chu vi c\u0169ng d\u1ec5 d\u00e0ng t\u00ednh to\u00e1n nhanh ch\u00f3ng<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>\u0110\u01b0\u1eddng k\u00ednh ch\u00fang ta \u0111i ra<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>Ba m\u01b0\u1eddi b\u1ed1n v\u00e0 m\u01b0\u1eddi b\u1ed1n, v\u00ec v\u1eady n\u00f3 \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/em><\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><em>&#8211; S\u01b0u t\u1ea7m &#8211;<\/em><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 th\u00f4ng tin v\u1ec1 c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n chu vi c\u1ee7a v\u00f2ng tr\u00f2n. N\u00f3i chung, c\u00f4ng th\u1ee9c kh\u00f4ng qu\u00e1 kh\u00f3 \u0111\u1ec3 nh\u1edb, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 h\u1ecd c\u1ea7n ph\u1ea3i hi\u1ec3u b\u1ea3n ch\u1ea5t c\u1ee7a c\u00f4ng th\u1ee9c \u0111\u1ec3 c\u00f3 th\u1ec3 t\u00ednh to\u00e1n khi h\u1ecd g\u1eb7p ch\u00ednh x\u00e1c bi\u1ec3u m\u1eabu to\u00e1n h\u1ecdc c\u00f3 li\u00ean quan. \u0110\u1ed3ng th\u1eddi, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c b\u00ed m\u1eadt chia s\u1ebb kh\u1ec9 \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 h\u1ecdc t\u1eadp c\u1ee7a em b\u00e9 t\u1ed1t h\u01a1n.<\/p>\n<p>                                      T\u00e0i li\u1ec7u tham kh\u1ea3o<\/p>\n<p>M\u00e1y t\u00ednh chu vi<\/p>\n<p>https:\/\/www.omnicalculator.com\/math\/circumference<\/p>\n<p>\u0110\u01b0\u1eddng tr\u00f2n<\/p>\n<p>https:\/\/en.wikipedia.org\/wiki\/circumference<\/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>T\u00ednh chu vi c\u1ee7a v\u00f2ng tr\u00f2n s\u1ebd kh\u00f4ng qu\u00e1 kh\u00f3 kh\u0103n, khi ch\u00fang ch\u1ec9 c\u1ea7n \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c c\u00f3 th\u1ec3 t\u00ednh to\u00e1n ho\u00e0n to\u00e0n nhanh ch\u00f3ng. H\u00e3y t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 c\u00f4ng th\u1ee9c, t\u1eadp th\u1ec3 d\u1ee5c v\u00e0 b\u00ed m\u1eadt h\u1ecdc t\u1eadp hi\u1ec7u qu\u1ea3 h\u01a1n trong b\u00e0i vi\u1ebft sau. Xem t\u1ea5t c\u1ea3 Xem x\u00e9t ki\u1ebfn&#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-14091","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14091","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=14091"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14091\/revisions"}],"predecessor-version":[{"id":16900,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/14091\/revisions\/16900"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=14091"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=14091"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=14091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}