{"id":16616,"date":"2025-07-03T19:35:04","date_gmt":"2025-07-03T12:35:04","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=16616"},"modified":"2025-07-04T14:35:08","modified_gmt":"2025-07-04T07:35:08","slug":"tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/","title":{"rendered":"T\u1ea5t t\u1ea7n t\u1eadt ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u1ec1 xi m\u00e9t vu\u00f4ng to\u00e1n l\u1edbp 4 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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#May_do_vuong_la_gi\" >M\u00e1y \u0111o vu\u00f4ng 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-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Lam_the_nao_de_doc_va_lam_the_nao_de_viet_mot_don_vi_duoc_de_xuat_dong_ho_vuong\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 vi\u1ebft m\u1ed9t \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t \u0111\u1ed3ng h\u1ed3 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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Huong_dan_ve_cach_chuyen_doi_DM2_sang_cac_don_vi_khac\" >H\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch chuy\u1ec3n \u0111\u1ed5i DM2 sang c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Cac_loai_DM2_pho_bien_cua_toan_hoc_trong_toan_hoc_lop_4\" >C\u00e1c lo\u1ea1i DM2 ph\u1ed5 bi\u1ebfn c\u1ee7a to\u00e1n h\u1ecdc trong to\u00e1n h\u1ecdc l\u1edbp 4<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Mau_1_Doc_va_viet_so_bang_met_vuong\" >M\u1eabu 1: \u0110\u1ecdc v\u00e0 vi\u1ebft s\u1ed1 b\u1eb1ng m\u00e9t vu\u00f4ng<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Mau_2_Chuyen_doi_cac_don_vi_khac_thanh_DM2_va_nguoc_lai\" >M\u1eabu 2: Chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c th\u00e0nh DM2 v\u00e0 ng\u01b0\u1ee3c l\u1ea1i<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Mau_3_So_sanh\" >M\u1eabu 3: So s\u00e1nh<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Mau_4_Tinh_toan\" >M\u1eabu 4: T\u00ednh to\u00e1n<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Bi_quyet_hoc_tap_va_ghi_nho_kien_%E2%80%8B%E2%80%8Bthuc_ve_met_vuong_tot_hon\" >B\u00ed quy\u1ebft h\u1ecdc t\u1eadp v\u00e0 ghi nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 m\u00e9t vu\u00f4ng t\u1ed1t h\u01a1n<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Xay_dung_cac_nen_tang_toan_hoc_va_tinh_yeu_danh_cho_tre_em_voi_toan_hoc\" >X\u00e2y d\u1ef1ng c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u00e0 t\u00ecnh y\u00eau d\u00e0nh cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#https_wwwyoutubecomwatchv7DSJPVHFROS\" >https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Hoc_toan_XI_vuong_met_bang_cach_hieu_ly_thuyet\" >H\u1ecdc to\u00e1n XI vu\u00f4ng m\u00e9t b\u1eb1ng c\u00e1ch hi\u1ec3u l\u00fd thuy\u1ebft<\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Hoc_voi_thuc_hanh_la_dieu_kien_tien_quyet\" >H\u1ecdc v\u1edbi th\u1ef1c h\u00e0nh l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Mot_so_bai_tap_DM2_de_tre_thuc_hanh\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp DM2 \u0111\u1ec3 tr\u1ebb th\u1ef1c h\u00e0nh<\/a><\/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\/tat-tan-tat-kien-thuc-ve-de-xi-met-vuong-toan-lop-4-chi-tiet\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>\u0110\u1ed3ng h\u1ed3 vu\u00f4ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng khu v\u1ef1c chung m\u00e0 h\u1ecd s\u1ebd g\u1eb7p v\u00e0 h\u1ecdc trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4. \u0110\u1ec3 gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 DM2, n\u1ed9i dung b\u00e0i vi\u1ebft sau \u0111\u00e2y s\u1ebd t\u1ed5ng h\u1ee3p v\u00e0 ph\u00e2n t\u00edch chi ti\u1ebft nh\u1ea5t \u0111\u1ec3 m\u1ecdi ng\u01b0\u1eddi tham kh\u1ea3o.<\/p>\n<p>                                                                    <\/p>\n<p class=\"title\">H\u00e0ng tri\u1ec7u tr\u1ebb em \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c k\u1ef9 n\u0103ng ng\u00f4n ng\u1eef c\u1ee7a ch\u00fang th\u00f4ng qua c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp c\u1ee7a kh\u1ec9<\/p>\n<p class=\"description\">\u0110\u0103ng k\u00fd ngay \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed v\u1ec1 c\u00e1c s\u1ea3n ph\u1ea9m v\u00e0 tuy\u1ebfn h\u1ecdc h\u1ecdc cho tr\u1ebb em.<\/p>\n<p>                                                                            *Vui l\u00f2ng ki\u1ec3m tra t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u1ee7a b\u1ea1n *Vui l\u00f2ng ki\u1ec3m tra s\u1ed1 \u0111i\u1ec7n tho\u1ea1i h\u01a1n 2.000 t\u1eeb &amp; 6.000 c\u00e2u ti\u1ebfng Anh \u0111\u1ec3 ph\u00e1t tri\u1ec3n to\u00e0n di\u1ec7n 4 k\u1ef9 n\u0103ng ti\u1ebfng Anh t\u1ed1t &#8211; ti\u1ebfng Anh theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7n \u0111\u1ea1i ph\u00e1t tri\u1ec3n kh\u1ea3 n\u0103ng EQ &amp; Vi\u1ec7t Nam *B\u1ea1n ch\u01b0a ch\u1ecdn b\u1ea5t k\u1ef3 m\u1ee5c n\u00e0o! \u0110\u0103ng k\u00fd t\u01b0 v\u1ea5n mi\u1ec5n ph\u00ed<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"May_do_vuong_la_gi\"><\/span>M\u00e1y \u0111o vu\u00f4ng l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong to\u00e1n h\u1ecdc, m\u00e9t vu\u00f4ng XI l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u01a1n v\u1ecb \u0111o \u0111\u01a1n v\u1ecb, \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch l\u1ea5y 1 m\u00e9t chi\u1ec1u d\u00e0i nh\u00e2n v\u1edbi chi\u1ec1u r\u1ed9ng 1 XI c\u1ee7a b\u1ea5t k\u1ef3 h\u00ecnh h\u1ecdc n\u00e0o. Bi\u1ec3u t\u01b0\u1ee3ng: DM2.<\/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\/de-xi-met-vuong-1.jpg\" alt=\"\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111\u01a1n v\u1ecb DM2. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Lam_the_nao_de_doc_va_lam_the_nao_de_viet_mot_don_vi_duoc_de_xuat_dong_ho_vuong\"><\/span>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ecdc v\u00e0 l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 vi\u1ebft m\u1ed9t \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t \u0111\u1ed3ng h\u1ed3 vu\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li dir=\"ltr\">C\u00e1ch \u0111\u1ecdc: Ch\u1ee7 \u0111\u1ec1 XI Square m\u00e9t<\/li>\n<li dir=\"ltr\">Ph\u01b0\u01a1ng ph\u00e1p vi\u1ebft: Ch\u00fang ta c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c vi\u1ebft t\u1eaft l\u00e0 &#8220;DM2&#8221;, &#8220;Square decimet&#8221;, &#8220;m\u00e9t vu\u00f4ng&#8221; t\u00f9y thu\u1ed9c v\u00e0o tr\u01b0\u1eddng h\u1ee3p.<\/li>\n<\/ul>\n<p dir=\"ltr\">V\u00ed d\u1ee5: 150dm2: M\u1ed9t tr\u0103m n\u0103m m\u01b0\u01a1i m\u00e9t vu\u00f4ng<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Huong_dan_ve_cach_chuyen_doi_DM2_sang_cac_don_vi_khac\"><\/span>H\u01b0\u1edbng d\u1eabn v\u1ec1 c\u00e1ch chuy\u1ec3n \u0111\u1ed5i DM2 sang c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Theo h\u1ec7 th\u1ed1ng \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf SI, \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i DM2 sang m\u1ed9t \u0111\u01a1n v\u1ecb kh\u00e1c, ch\u00fang t\u00f4i c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o c\u00e1c quy t\u1eafc sau:<\/p>\n<ul>\n<li dir=\"ltr\">Khi thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb DM2 th\u00e0nh \u0111\u01a1n v\u1ecb nh\u1ecf h\u01a1n li\u1ec1n k\u1ec1, ch\u00fang t\u00f4i nh\u00e2n s\u1ed1 \u0111\u00f3 v\u1edbi 100<\/li>\n<li dir=\"ltr\">Khi thay \u0111\u1ed5i \u0111\u01a1n v\u1ecb \u0111o DM2 th\u00e0nh \u0111\u01a1n v\u1ecb l\u1edbn h\u01a1n, ch\u00fang t\u00f4i chia s\u1ed1 \u0111\u00f3 v\u1edbi 100<\/li>\n<\/ul>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: 1 DM2 = 100 cm2 = 10000 mm2 ho\u1eb7c 1 DM2 = 0,01 m2 = 0,0001 DAM2<\/em><\/p>\n<p dir=\"ltr\">Ch\u00fang ta c\u00f3 th\u1ec3 theo d\u00f5i b\u1ea3ng 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\/de-xi-met-vuong-2.jpg\" alt=\"B\u1ea3ng chuy\u1ec3n \u0111\u1ed5i di\u1ec7n t\u00edch \u0111\u01a1n v\u1ecb. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_loai_DM2_pho_bien_cua_toan_hoc_trong_toan_hoc_lop_4\"><\/span>C\u00e1c lo\u1ea1i DM2 ph\u1ed5 bi\u1ebfn c\u1ee7a to\u00e1n h\u1ecdc trong to\u00e1n h\u1ecdc l\u1edbp 4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4, khi tr\u1ebb em v\u1eeba l\u00e0m quen v\u1edbi ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 \u0111\u1ed3ng h\u1ed3 vu\u00f4ng, ch\u00fang s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp 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\/de-xi-met-vuong-3.jpg\" alt=\"C\u00f3 nhi\u1ec1u lo\u1ea1i b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn c\u00e1c \u0111\u01a1n v\u1ecb DM2. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Doc_va_viet_so_bang_met_vuong\"><\/span>M\u1eabu 1: \u0110\u1ecdc v\u00e0 vi\u1ebft s\u1ed1 b\u1eb1ng m\u00e9t vu\u00f4ng<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: H\u1ecd s\u1ebd n\u1eafm b\u1eaft c\u00e1ch \u0111\u1ecdc v\u00e0 vi\u1ebft c\u1ee7a \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng DM2 \u0111\u1ec3 gi\u1ea3i t\u1eadp ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5:<\/em><\/p>\n<p dir=\"ltr\"><em>A) 456 DM2: B\u1ed1n tr\u0103m n\u0103m m\u01b0\u01a1i m\u00e9t vu\u00f4ng<\/em><\/p>\n<p dir=\"ltr\"><em>b) B\u1ea3y tr\u0103m hai m\u01b0\u01a1i m\u00e9t vu\u00f4ng: 725 DM2<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Chuyen_doi_cac_don_vi_khac_thanh_DM2_va_nguoc_lai\"><\/span>M\u1eabu 2: Chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c th\u00e0nh DM2 v\u00e0 ng\u01b0\u1ee3c l\u1ea1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang s\u1ebd d\u1ef1a tr\u00ean quy t\u1eafc chuy\u1ec3n \u0111\u1ed5i c\u00e1c \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng di\u1ec7n t\u00edch \u0111\u1ec3 th\u1ef1c hi\u1ec7n chuy\u1ec3n \u0111\u1ed5i theo y\u00eau c\u1ea7u.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5:<\/em><\/p>\n<p dir=\"ltr\"><em>A) 4 DM2 = &#8230; CM2<\/em><\/p>\n<p dir=\"ltr\"><em>B) &#8230; CM2 = 3DM220CM2<\/em><\/p>\n<p dir=\"ltr\"><em>Ph\u1ea7n th\u01b0\u1edfng:<\/em><\/p>\n<p dir=\"ltr\"><em>A) 4 DM2 = 400cm2<\/em><\/p>\n<p dir=\"ltr\"><em>b) 320cm2 = 3dm220cm2<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_So_sanh\"><\/span>M\u1eabu 3: So s\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: H\u1ecd s\u1ebd ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i c\u00e1c c\u1ea1nh th\u00e0nh c\u00f9ng m\u1ed9t \u0111\u01a1n v\u1ecb DM2 ho\u1eb7c c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c, sau \u0111\u00f3 b\u1eaft \u0111\u1ea7u so s\u00e1nh l\u00e0 s\u1ed1 t\u1ef1 nhi\u00ean b\u00ecnh th\u01b0\u1eddng.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5:<\/em><\/p>\n<p dir=\"ltr\"><em>A) 210 (DM2) &#8230; 2 (DM2) 10 (CM2)<\/em><\/p>\n<p dir=\"ltr\"><em>b) 1954 (DM2) &#8230; 19 (DM2) 50 (cm2)<\/em><\/p>\n<p dir=\"ltr\"><em>Ph\u1ea7n th\u01b0\u1edfng:<\/em><\/p>\n<p dir=\"ltr\"><em>A) 10 (DM2) &#8230;. 2 (DM2) 10 (CM2)<\/em><\/p>\n<p dir=\"ltr\"><em>Ch\u00fang ta c\u00f3: 2 (DM2) 10 (CM2) = 210 cm2 <\/em><\/p>\n<p dir=\"ltr\"><em>V\u00ec v\u1eady, 210 (DM2) = 2 (DM2) 10 (cm2)<\/em><\/p>\n<p dir=\"ltr\"><em>b) 1954 (DM2) &#8230; 19 (DM2) 50 (cm2)<\/em><\/p>\n<p dir=\"ltr\"><em>Ch\u00fang ta c\u00f3: 19 (DM2) 50 (CM2) = 1950 DM2 <\/em><\/p>\n<p dir=\"ltr\"><em>V\u00ec v\u1eady, 1954 (DM2)&gt; 19 (DM2) 50 (cm2)<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_4_Tinh_toan\"><\/span>M\u1eabu 4: T\u00ednh to\u00e1n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i ph\u00e1p: Th\u00f4ng th\u01b0\u1eddng \u0111\u00e2y s\u1ebd l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 v\u1edbi gi\u1ea3i ph\u00e1p, v\u00ec v\u1eady h\u1ecd s\u1ebd ph\u1ea3i \u0111\u1ecdc v\u1ea5n \u0111\u1ec1 m\u1ed9t c\u00e1ch c\u1ea9n th\u1eadn, nh\u1eadn x\u00e9t d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c \u0111\u01b0a ra, v\u1ea5n \u0111\u1ec1 \u0111\u00f2i h\u1ecfi v\u1ea5n \u0111\u1ec1 \u0111\u1ec3 \u0111\u01b0a ra gi\u1ea3i ph\u00e1p, t\u00ednh to\u00e1n v\u00e0 tr\u00ecnh b\u00e0y gi\u1ea3i ph\u00e1p ch\u00ednh x\u00e1c.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Cho ABCD vu\u00f4ng v\u1edbi AB = 6m. C\u00f3 bao nhi\u00eau khu v\u1ef1c ABCD vu\u00f4ng c\u00f3 chi\u1ec1u d\u00e0i vu\u00f4ng l\u00e0 h\u00ecnh vu\u00f4ng?<\/em><\/p>\n<p dir=\"ltr\"><em>H\u01b0\u1edbng d\u1eabn gi\u1ea3i ph\u00e1p:<\/em><\/p>\n<p dir=\"ltr\"><em>Thay \u0111\u1ed5i: 6m = 60dm<\/em><\/p>\n<p dir=\"ltr\"><em>ABCD khu v\u1ef1c vu\u00f4ng l\u00e0:<\/em><\/p>\n<p dir=\"ltr\"><em>60 \u00d7 60 = 3600 (DM2)<\/em><\/p>\n<p dir=\"ltr\"><em>Tr\u1ea3 l\u1eddi: 3600 DM2.<\/em><\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bi_quyet_hoc_tap_va_ghi_nho_kien_%E2%80%8B%E2%80%8Bthuc_ve_met_vuong_tot_hon\"><\/span>B\u00ed quy\u1ebft h\u1ecdc t\u1eadp v\u00e0 ghi nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 m\u00e9t vu\u00f4ng t\u1ed1t h\u01a1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap h\u1ecd khi h\u1ecd l\u00e0m quen v\u1edbi ki\u1ebfn \u200b\u200bth\u1ee9c DM2, c\u0169ng nh\u01b0 t\u0103ng kh\u1ea3 n\u0103ng ghi nh\u1edb t\u1ed1t v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 m\u1eb9o \u0111\u1ec3 tr\u1ebb em \u00e1p d\u1ee5ng:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xay_dung_cac_nen_tang_toan_hoc_va_tinh_yeu_danh_cho_tre_em_voi_toan_hoc\"><\/span>X\u00e2y d\u1ef1ng c\u00e1c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u00e0 t\u00ecnh y\u00eau d\u00e0nh cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap tr\u1ebb c\u1ea3m th\u1ea5y ph\u1ea5n kh\u00edch h\u01a1n khi h\u1ecdc to\u00e1n, y\u00eau th\u00edch m\u00f4n h\u1ecdc n\u00e0y, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 m\u1ea1nh m\u1ebd m\u00e0 cha m\u1eb9 kh\u00f4ng n\u00ean b\u1ecf qua. \u0110\u00e2y l\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u1ec3 gi\u1ea3ng d\u1ea1y to\u00e1n h\u1ecdc tr\u1ef1c tuy\u1ebfn, v\u1edbi n\u1ed9i dung c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh GDPT m\u1edbi nh\u1ea5t c\u1ee7a B\u1ed9 cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 tr\u1ebb em ti\u1ec3u h\u1ecdc.<\/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\/de-xi-met-vuong-4.jpg\" alt=\"H\u1ecdc to\u00e1n th\u00fa v\u1ecb v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">M\u1ed9t t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t khi tr\u1ebb h\u1ecdc to\u00e1n v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9 l\u00e0 h\u1ecdc th\u00f4ng qua c\u00e1c video v\u00e0 h\u00ecnh \u1ea3nh h\u00e0i h\u01b0\u1edbc, v\u1edbi n\u1ed9i dung d\u1ef1a tr\u00ean h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc, \u0111\u01b0\u1ee3c chia th\u00e0nh 4 c\u1ea5p \u0111\u1ed9 t\u1eeb d\u1ec5 d\u00e0ng \u0111\u1ebfn kh\u00f3 kh\u0103n, t\u01b0\u01a1ng \u1ee9ng v\u1edbi tu\u1ed5i v\u00e0 l\u1edbp h\u1ecdc. V\u00e0 t\u1ea5t nhi\u00ean s\u1ebd bao g\u1ed3m ki\u1ebfn \u200b\u200bth\u1ee9c \u0111o l\u01b0\u1eddng \u0111\u1ea7y \u0111\u1ee7. C\u1ea3 hai \u0111\u1ec1u gi\u00fap tr\u1ebb t\u0103ng s\u1ef1 quan t\u00e2m trong vi\u1ec7c h\u1ecdc to\u00e1n v\u00e0 x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc nh\u1ea5t cho tr\u1ebb em.<\/p>\n<p dir=\"ltr\">Ngo\u00e0i ra, khi h\u1ecdc to\u00e1n v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9, em b\u00e9 c\u1ee7a b\u1ea1n s\u1ebd c\u00f3 c\u01a1 h\u1ed9i tham gia h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c trong to\u00e1n h\u1ecdc, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ea3 hai \u0111\u00e3 ch\u01a1i v\u00e0 h\u1ecdc hi\u1ec7u qu\u1ea3. \u0110\u1ed3ng th\u1eddi, \u0111\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p gi\u00e1o d\u1ee5c hi\u1ec7n \u0111\u1ea1i v\u00e0 t\u00edch c\u1ef1c, gi\u00fap t\u0103ng suy ngh\u0129, s\u00e1ng t\u1ea1o v\u00e0 nh\u1ea1y c\u1ea3m khi tr\u1ebb h\u1ecdc to\u00e1n t\u1ed1t h\u01a1n.<\/p>\n<p dir=\"ltr\">Ngay c\u1ea3 c\u00e1c b\u00e0i gi\u1ea3ng v\u1ec1 \u1ee9ng d\u1ee5ng c\u0169ng \u0111\u01b0\u1ee3c d\u1ea1y ho\u00e0n to\u00e0n b\u1eb1ng ti\u1ebfng Anh, \u0111\u00e2y l\u00e0 c\u01a1 h\u1ed9i gi\u00fap tr\u1ebb em ph\u00e1t tri\u1ec3n ngo\u1ea1i ng\u1eef ho\u00e0n h\u1ea3o. \u0110\u1ed1i v\u1edbi tr\u1ebb em kh\u00f4ng bi\u1ebft ti\u1ebfng Anh v\u1eabn c\u00f3 th\u1ec3 h\u1ecdc, b\u1edfi v\u00ec n\u1ed9i dung l\u00e0 d\u1ec5 hi\u1ec3u nh\u1ea5t, do \u0111\u00f3 gi\u00fap ch\u00fang bi\u1ebft nhi\u1ec1u ngo\u1ea1i ng\u1eef h\u01a1n m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean m\u00e0 kh\u00f4ng chi ti\u00eau qu\u00e1 nhi\u1ec1u chi ph\u00ed.<\/p>\n<p dir=\"ltr\">\u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math, ph\u1ee5 huynh c\u00f3 th\u1ec3 nh\u1ea5p \u0111\u1ec3 \u0111\u0103ng k\u00fd ngay b\u00e2y gi\u1edd \u0111\u1ec3 h\u1ed7 tr\u1ee3 chu \u0111\u00e1o nh\u1ea5t.<\/p>\n<p dir=\"ltr\"> <img loading=\"lazy\" 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\" alt=\"\" width=\"185\" height=\"25\"><\/p>\n<h3 dir=\"ltr\" style=\"text-align: center\"><span class=\"ez-toc-section\" id=\"https_wwwyoutubecomwatchv7DSJPVHFROS\"><\/span><a href=\"https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/a><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hoc_toan_XI_vuong_met_bang_cach_hieu_ly_thuyet\"><\/span>H\u1ecdc to\u00e1n XI vu\u00f4ng m\u00e9t b\u1eb1ng c\u00e1ch hi\u1ec3u l\u00fd thuy\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft b\u00e0i t\u1eadp, c\u0169ng nh\u01b0 \u1ee9ng d\u1ee5ng \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng DM2, m\u1ecdi ng\u01b0\u1eddi c\u1ea7n hi\u1ec3u ki\u1ebfn \u200b\u200bth\u1ee9c l\u00fd thuy\u1ebft v\u1ec1 \u0111\u01a1n v\u1ecb n\u00e0y t\u1eeb vi\u1ec7c \u0111\u1ecdc, vi\u1ebft, chuy\u1ec3n \u0111\u1ed5i, c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp &#8230;. m\u1ed9t khi l\u00fd thuy\u1ebft \u0111\u01b0\u1ee3c n\u1eafm b\u1eaft ch\u1eafc ch\u1eafn, tr\u1ebb s\u1ebd d\u1ec5 d\u00e0ng t\u00ecm hi\u1ec3u v\u00e0 x\u1eed l\u00fd c\u00e1c v\u1ea5n \u0111\u1ec1 ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Hoc_voi_thuc_hanh_la_dieu_kien_tien_quyet\"><\/span>H\u1ecdc v\u1edbi th\u1ef1c h\u00e0nh l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Sau khi em b\u00e9 \u0111\u00e3 th\u00e0nh th\u1ea1o l\u00fd thuy\u1ebft, cha m\u1eb9 n\u00ean t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho con c\u00e1i c\u1ee7a h\u1ecd th\u1ef1c h\u00e0nh nhi\u1ec1u h\u01a1n \u0111\u1ec3 k\u00edch th\u00edch kh\u1ea3 n\u0103ng suy ngh\u0129, t\u1ea1o v\u00e0 hi\u1ec3u b\u1ea3n ch\u1ea5t c\u1ee7a to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c h\u01a1n. Vi\u1ec7c th\u1ef1c h\u00e0nh \u1edf \u0111\u00e2y c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u t\u1eeb <em>Tham gia c\u00f9ng con b\u1ea1n \u0111\u1ec3 l\u00e0m b\u00e0i t\u1eadp v\u1ec1 nh\u00e0 \u0111\u01b0\u1ee3c giao \u1edf tr\u01b0\u1eddng, s\u00e1ch gi\u00e1o khoa, b\u00e0i t\u1eadp, \u1ee9ng d\u1ee5ng trong th\u1ef1c t\u1ebf, t\u1ed5 ch\u1ee9c c\u00e1c tr\u00f2 ch\u01a1i to\u00e1n h\u1ecdc &#8230;.<\/em><\/p>\n<p dir=\"ltr\">Khi luy\u1ec7n t\u1eadp, c\u00e0ng nhi\u1ec1u tr\u1ebb em s\u1ebd nh\u1edb ki\u1ebfn \u200b\u200bth\u1ee9c, c\u0169ng nh\u01b0 t\u1ef1 tin chinh ph\u1ee5c khi gi\u1ea3i to\u00e1n.<\/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\/de-xi-met-vuong-5.jpg\" alt=\"\u0110i\u1ec1u r\u1ea5t quan tr\u1ecdng l\u00e0 ph\u1ea3i th\u1ef1c h\u00e0nh v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_DM2_de_tre_thuc_hanh\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp DM2 \u0111\u1ec3 tr\u1ebb th\u1ef1c h\u00e0nh<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 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 m\u00e9t vu\u00f4ng cho cha m\u1eb9 v\u00e0 tr\u1ebb em th\u1ef1c h\u00e0nh:<\/p>\n<p dir=\"ltr\">C\u00e2u 1: \u0110\u1ed3ng h\u1ed3 h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u l\u00e0:<\/p>\n<p dir=\"ltr\">A. CM2<\/p>\n<p dir=\"ltr\">B. DM2<\/p>\n<p dir=\"ltr\">C. M2<\/p>\n<p dir=\"ltr\">D. MM2<\/p>\n<p dir=\"ltr\">C\u00e2u 2: L\u00e0 \u0111\u1ed3ng h\u1ed3 vu\u00f4ng k\u00fd hi\u1ec7u M2. \u0110\u00fang hay sai?<\/p>\n<p dir=\"ltr\">C\u00e2u 3: \u0110i\u1ec1n v\u00e0o s\u1ed1 th\u00edch h\u1ee3p trong d\u1ea5u ch\u1ea5m:<\/p>\n<p dir=\"ltr\">3dm2 = &#8230; CM2<\/p>\n<p dir=\"ltr\">12m2 = &#8230; DM2<\/p>\n<p dir=\"ltr\">4000 cm 2 = &#8230; DM2<\/p>\n<p dir=\"ltr\">10dm2 = &#8230;&#8230;.. CM2<\/p>\n<p dir=\"ltr\">2000cm2 = &#8230;&#8230; M2<\/p>\n<p dir=\"ltr\">1029dm2 = &#8230;.. CM2<\/p>\n<p dir=\"ltr\">4dm2 = &#8230;&#8230;. M2<\/p>\n<p dir=\"ltr\">508 cm 2 = &#8230;.. DM2 &#8230;. CM2<\/p>\n<p dir=\"ltr\">20100dm2 = &#8230;.. CM2<\/p>\n<p dir=\"ltr\">800dm2 = &#8230;.. M2<\/p>\n<p dir=\"ltr\">C\u00e2u 4: Vi\u1ebft (theo m\u1eabu):<\/p>\n<p dir=\"ltr\">49dm2: Qu\u1ea3ng tr\u01b0\u1eddng b\u1ed1n m\u01b0\u01a1i ch\u00edn kh\u1ed1i<\/p>\n<p dir=\"ltr\">119dm2: \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026<\/p>\n<p dir=\"ltr\">1969dm2: \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026<\/p>\n<p dir=\"ltr\">32 000DM2: \u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026\u2026<\/p>\n<p dir=\"ltr\">C\u00e2u 5: Vi\u1ebft (theo m\u1eabu):<\/p>\n<p dir=\"ltr\">M\u1ed9t tr\u0103m linh ti\u00eau \u0111\u1ec1 hai t\u1ea7ng: 102dm2<\/p>\n<p dir=\"ltr\">Hai ngh\u00ecn kh\u00f4ng c\u00f3 h\u00e0ng tr\u0103m n\u0103m vu\u00f4ng \u0111\u1ec3 xem:<\/p>\n<p dir=\"ltr\">M\u1ed9t ngh\u00ecn ch\u00edn tr\u0103m n\u0103m m\u01b0\u01a1i b\u1ed1n \u0111\u1ea7u vu\u00f4ng:<\/p>\n<p dir=\"ltr\">Ch\u00edn tr\u0103m ch\u00edn m\u01b0\u01a1i vu\u00f4ng vu\u00f4ng: \u2026\u2026\u2026\u2026<\/p>\n<p dir=\"ltr\">C\u00e2u 6: \u0110i\u1ec1n v\u00e0o con d\u1ea5u&gt;, &lt;, = trong d\u1ea5u ch\u1ea5m<\/p>\n<p dir=\"ltr\">210 (DM2) &#8230; 2 (DM2) 10 (CM2)<\/p>\n<p dir=\"ltr\">1954 (DM2) &#8230; 19 (DM2) 50 (CM2)<\/p>\n<p dir=\"ltr\">6 (DM2) 3 (CM2) &#8230; 603 (CM2)<\/p>\n<p dir=\"ltr\">2001 (CM2) &#8230; 20 (DM2) 10 (CM2)<\/p>\n<p dir=\"ltr\">C\u00e2u 7: \u0110\u01b0a ra ABCD h\u00ecnh vu\u00f4ng v\u1edbi AB = 6m. C\u00f3 bao nhi\u00eau khu v\u1ef1c ABCD vu\u00f4ng c\u00f3 chi\u1ec1u d\u00e0i vu\u00f4ng l\u00e0 h\u00ecnh vu\u00f4ng?<\/p>\n<p dir=\"ltr\">C\u00e2u 8: \u0110\u1ec3 m\u1edf m\u1ed9t c\u0103n ph\u00f2ng, m\u1ecdi ng\u01b0\u1eddi s\u1eed d\u1ee5ng 400 vi\u00ean g\u1ea1ch vu\u00f4ng v\u1edbi 30cm, bi\u1ebft di\u1ec7n t\u00edch c\u1ee7a m\u1ea1ch v\u1eefa l\u00e0 kh\u00f4ng \u0111\u00e1ng k\u1ec3.<\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, c\u00f3 bao nhi\u00eau dm2 l\u00e0 khu v\u1ef1c ph\u00f2ng<\/p>\n<p dir=\"ltr\">C\u00e2u 9: M\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u d\u00e0i 40 dm, chi\u1ec1u r\u1ed9ng 20 dm. T\u00ednh di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt \u0111\u00f3.<\/p>\n<p dir=\"ltr\">C\u00e2u 10: \u0110\u1ecdc: 32 DM2; 911 DM2; 1952dm2; 492 000dm2<\/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\" style=\"line-height: 1.7999999999999998;text-align: justify;margin-top: 12pt;margin-bottom: 12pt\">Tr\u00ean \u0111\u00e2y l\u00e0 ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n nh\u1ea5t v\u1ec1 \u0111\u01a1n v\u1ecb \u0111o xi m\u00e9t vu\u00f4ng. Hy v\u1ecdng, th\u00f4ng qua vi\u1ec7c chia s\u1ebb \u1edf tr\u00ean s\u1ebd l\u00e0 ti\u1ec1n \u0111\u1ec1 \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c \u1ee9ng d\u1ee5ng h\u1ecdc t\u1eadp v\u00e0 th\u1ef1c t\u1ebf c\u1ee7a m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n<p>                                      T\u00e0i li\u1ec7u tham kh\u1ea3o<\/p>\n<p>Decimeter Square (DM2) &#8211; Chuy\u1ec3n \u0111\u1ed5i khu v\u1ef1c<\/p>\n<p>https: \/\/ www.<\/p>\n<p>Th\u00e1nh \u0111\u1ecba vu\u00f4ng l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng di\u1ec7n t\u00edch<\/p>\n<p>https:\/\/www.aqua-calc.com\/what-is\/area\/square-decimet<\/p>\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\u1ed3ng h\u1ed3 vu\u00f4ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 \u0111\u01a1n v\u1ecb \u0111o l\u01b0\u1eddng khu v\u1ef1c chung m\u00e0 h\u1ecd s\u1ebd g\u1eb7p v\u00e0 h\u1ecdc trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4. \u0110\u1ec3 gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 ki\u1ebfn \u200b\u200bth\u1ee9c v\u1ec1 DM2, n\u1ed9i dung b\u00e0i vi\u1ebft sau \u0111\u00e2y s\u1ebd t\u1ed5ng h\u1ee3p v\u00e0 ph\u00e2n t\u00edch chi ti\u1ebft nh\u1ea5t \u0111\u1ec3 m\u1ecdi ng\u01b0\u1eddi tham kh\u1ea3o&#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-16616","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/16616","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=16616"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/16616\/revisions"}],"predecessor-version":[{"id":23129,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/16616\/revisions\/23129"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=16616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=16616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=16616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}