{"id":888,"date":"2025-06-12T12:01:01","date_gmt":"2025-06-12T05:01:01","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=888"},"modified":"2025-06-12T19:34:56","modified_gmt":"2025-06-12T12:34:56","slug":"dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/","title":{"rendered":"Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u1ee7a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt l\u00e0 g\u00ec?"},"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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Dinh_nghia_hinh_hop_chu_nhat\" >\u0110\u1ecbnh ngh\u0129a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Tinh_chat_hinh_hop_chu_nhat\" >T\u00ednh ch\u1ea5t h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Dien_tich_be_mat_hinh_hop_chu_nhat_la_gi\" >Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt l\u00e0 g\u00ec?<\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Dien_tich_xung_quanh_hinh_hop_chu_nhat\" >Di\u1ec7n t\u00edch xung quanh h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<\/a><\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Vi_du_tinh_dien_tich_hinh_hop_chu_nhat\" >V\u00ed d\u1ee5 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Vi_du_1\" >V\u00ed d\u1ee5 1<\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Vi_du_2\" >V\u00ed d\u1ee5 2<\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Khi_nao_can_tinh_dien_tich_toan_phan_va_dien_tich_xung_quanh\" >Khi n\u00e0o c\u1ea7n t\u00ednh di\u1ec7n t\u00edch to\u00e0n ph\u1ea7n v\u00e0 di\u1ec7n t\u00edch xung quanh?<\/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\/dien-tich-be-mat-cua-hinh-hop-chu-nhat-la-gi\/#Luu_y_khi_tinh_dien_tich_hinh_hop_chu_nhat\" >L\u01b0u \u00fd khi t\u00ednh di\u1ec7n t\u00edch h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Dinh_nghia_hinh_hop_chu_nhat\"><\/span>\u0110\u1ecbnh ngh\u0129a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>H\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt l\u00e0 h\u00ecnh kh\u00f4ng gian ba chi\u1ec1u c\u00f3 s\u00e1u m\u1eb7t, m\u1ed7i m\u1eb7t l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt. C\u00e1c m\u1eb7t \u0111\u1ed1i di\u1ec7n c\u1ee7a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt song song v\u00e0 b\u1eb1ng nhau.  V\u00ed d\u1ee5 quen thu\u1ed9c nh\u1ea5t v\u1ec1 h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt ch\u00ednh l\u00e0 h\u1ed9p ph\u1ea5n, vi\u00ean g\u1ea1ch, hay th\u1eadm ch\u00ed l\u00e0 m\u1ed9t c\u0103n ph\u00f2ng.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-1.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-1\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-1<\/em><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tinh_chat_hinh_hop_chu_nhat\"><\/span>T\u00ednh ch\u1ea5t h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>H\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt c\u00f3 m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t quan tr\u1ecdng:<\/p>\n<ul>\n<li>S\u00e1u m\u1eb7t l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt.<\/li>\n<li>C\u00e1c m\u1eb7t \u0111\u1ed1i di\u1ec7n song song v\u00e0 b\u1eb1ng nhau.<\/li>\n<li>C\u00f3 12 c\u1ea1nh, 8 \u0111\u1ec9nh v\u00e0 6 m\u1eb7t.<\/li>\n<li>C\u00e1c \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau v\u00e0 c\u1eaft nhau t\u1ea1i trung \u0111i\u1ec3m m\u1ed7i \u0111\u01b0\u1eddng.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-2.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-2\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-2<\/em><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Dien_tich_be_mat_hinh_hop_chu_nhat_la_gi\"><\/span>Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t c\u1ee7a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt, hay c\u00f2n g\u1ecdi l\u00e0 di\u1ec7n t\u00edch xung quanh, l\u00e0 t\u1ed5ng di\u1ec7n t\u00edch c\u1ee7a s\u00e1u m\u1eb7t c\u1ee7a h\u00ecnh h\u1ed9p.  N\u00f3i c\u00e1ch kh\u00e1c, \u0111\u00f3 l\u00e0 di\u1ec7n t\u00edch bao ph\u1ee7 to\u00e0n b\u1ed9 b\u1ec1 m\u1eb7t b\u00ean ngo\u00e0i c\u1ee7a h\u00ecnh h\u1ed9p.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-3.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-3\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-3<\/em><\/p>\n<p>C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t (di\u1ec7n t\u00edch to\u00e0n ph\u1ea7n) c\u1ee7a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt:<\/p>\n<p><strong>S<sub>to\u00e0n ph\u1ea7n<\/sub> = 2(ab + bc + ac)<\/strong><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>a: chi\u1ec1u d\u00e0i<\/li>\n<li>b: chi\u1ec1u r\u1ed9ng<\/li>\n<li>c: chi\u1ec1u cao<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Dien_tich_xung_quanh_hinh_hop_chu_nhat\"><\/span>Di\u1ec7n t\u00edch xung quanh h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Di\u1ec7n t\u00edch xung quanh c\u1ee7a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt l\u00e0 t\u1ed5ng di\u1ec7n t\u00edch b\u1ed1n m\u1eb7t b\u00ean, kh\u00f4ng bao g\u1ed3m hai m\u1eb7t \u0111\u00e1y.<\/p>\n<p>C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch xung quanh:<\/p>\n<p><strong>S<sub>xung quanh<\/sub> = 2(a + b)c<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vi_du_tinh_dien_tich_hinh_hop_chu_nhat\"><\/span>V\u00ed d\u1ee5 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Vi_du_1\"><\/span>V\u00ed d\u1ee5 1<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u d\u00e0i 5cm, chi\u1ec1u r\u1ed9ng 3cm v\u00e0 chi\u1ec1u cao 2cm. T\u00ednh di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t v\u00e0 di\u1ec7n t\u00edch xung quanh.<\/p>\n<p><strong>Gi\u1ea3i:<\/strong><\/p>\n<ul>\n<li>S<sub>to\u00e0n ph\u1ea7n<\/sub> = 2(5&#215;3 + 3&#215;2 + 5&#215;2) = 2(15 + 6 + 10) = 62 cm\u00b2<\/li>\n<li>S<sub>xung quanh<\/sub> = 2(5 + 3)x2 = 32 cm\u00b2<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-5.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-5\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-5<\/em><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Vi_du_2\"><\/span>V\u00ed d\u1ee5 2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>M\u1ed9t h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt c\u00f3 di\u1ec7n t\u00edch xung quanh l\u00e0 100cm\u00b2 v\u00e0 chi\u1ec1u cao l\u00e0 5cm.  Bi\u1ebft chi\u1ec1u d\u00e0i g\u1ea5p \u0111\u00f4i chi\u1ec1u r\u1ed9ng. T\u00ednh di\u1ec7n t\u00edch to\u00e0n ph\u1ea7n.<\/p>\n<p><strong>Gi\u1ea3i:<\/strong><\/p>\n<ul>\n<li>G\u1ecdi chi\u1ec1u r\u1ed9ng l\u00e0 x, th\u00ec chi\u1ec1u d\u00e0i l\u00e0 2x.<\/li>\n<li>S<sub>xung quanh<\/sub> = 2(x + 2x)5 = 100<\/li>\n<li>30x = 100 =&gt; x = 10\/3 cm<\/li>\n<li>Chi\u1ec1u d\u00e0i l\u00e0 20\/3 cm.<\/li>\n<li>S<sub>to\u00e0n ph\u1ea7n<\/sub> = 2( (10\/3)x(20\/3) + (10\/3)x5 + (20\/3)x5 ) =  2(200\/9 + 50\/3 + 100\/3) \u2248 155.56 cm\u00b2<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-6.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-6\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-6<\/em><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Khi_nao_can_tinh_dien_tich_toan_phan_va_dien_tich_xung_quanh\"><\/span>Khi n\u00e0o c\u1ea7n t\u00ednh di\u1ec7n t\u00edch to\u00e0n ph\u1ea7n v\u00e0 di\u1ec7n t\u00edch xung quanh?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>Di\u1ec7n t\u00edch to\u00e0n ph\u1ea7n:<\/strong>  Khi c\u1ea7n t\u00ednh to\u00e1n l\u01b0\u1ee3ng v\u1eadt li\u1ec7u \u0111\u1ec3 bao ph\u1ee7 to\u00e0n b\u1ed9 h\u00ecnh h\u1ed9p, v\u00ed d\u1ee5 nh\u01b0 s\u01a1n, gi\u1ea5y g\u00f3i qu\u00e0.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-9.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-9\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-9<\/em><\/p>\n<ul>\n<li><strong>Di\u1ec7n t\u00edch xung quanh:<\/strong> Khi ch\u1ec9 c\u1ea7n t\u00ednh di\u1ec7n t\u00edch c\u00e1c m\u1eb7t b\u00ean, v\u00ed d\u1ee5 nh\u01b0 d\u00e1n gi\u1ea5y d\u00e1n t\u01b0\u1eddng cho b\u1ed1n b\u1ee9c t\u01b0\u1eddng c\u1ee7a m\u1ed9t c\u0103n ph\u00f2ng.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ckconitsha.com\/vn\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-hop-chu-nhat-10.jpg\" alt=\"dien-tich-hinh-hop-chu-nhat-10\" width=\"800\" height=\"450\" \/><em class=\"cap-ai\">dien-tich-hinh-hop-chu-nhat-10<\/em><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Luu_y_khi_tinh_dien_tich_hinh_hop_chu_nhat\"><\/span>L\u01b0u \u00fd khi t\u00ednh di\u1ec7n t\u00edch h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c k\u00edch th\u01b0\u1edbc \u0111\u1ec1u c\u00f9ng \u0111\u01a1n v\u1ecb \u0111o.<\/li>\n<li>Ki\u1ec3m tra l\u1ea1i k\u1ebft qu\u1ea3 sau khi t\u00ednh to\u00e1n.<\/li>\n<li>Hi\u1ec3u r\u00f5 y\u00eau c\u1ea7u b\u00e0i to\u00e1n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea7n t\u00ednh di\u1ec7n t\u00edch to\u00e0n ph\u1ea7n hay di\u1ec7n t\u00edch xung quanh.<\/li>\n<\/ul>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/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>\u0110\u1ecbnh ngh\u0129a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt H\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt l\u00e0 h\u00ecnh kh\u00f4ng gian ba chi\u1ec1u c\u00f3 s\u00e1u m\u1eb7t, m\u1ed7i m\u1eb7t l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt. C\u00e1c m\u1eb7t \u0111\u1ed1i di\u1ec7n c\u1ee7a h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt song song v\u00e0 b\u1eb1ng nhau. V\u00ed d\u1ee5 quen thu\u1ed9c nh\u1ea5t v\u1ec1 h\u00ecnh h\u1ed9p ch\u1eef nh\u1eadt ch\u00ednh l\u00e0 h\u1ed9p ph\u1ea5n, vi\u00ean&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-888","post","type-post","status-publish","format-standard","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/888","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=888"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/888\/revisions"}],"predecessor-version":[{"id":18328,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/888\/revisions\/18328"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}