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{"common":{"save":0,"post_id":"4598","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6774","post_id":"4598","mon_id":"1158113","chapter_id":"1158129","question":"<p>\u0110\u1ec3 l&agrave;m m\u1ed9t con di\u1ec1u, b\u1ea1n An l\u1ea5y m\u1ed9t t\u1edd gi\u1ea5y h&igrave;nh ch\u1eef nh\u1eadt c&oacute; chi\u1ec1u d&agrave;i 70 cm v&agrave; chi\u1ec1u r\u1ed9ng 50 cm \u0111\u1ec3 c\u1eaft th&agrave;nh m\u1ed9t h&igrave;nh thoi nh\u01b0 h&igrave;nh b&ecirc;n d\u01b0\u1edbi. T&iacute;nh di\u1ec7n t&iacute;ch c\u1ee7a con di\u1ec1u.<\/p><p><span class=\"svgedit\"><svg height=\"200\" width=\"200\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"202\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" id=\"canvasGrid\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" id=\"svg_9\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><rect fill=\"#ffaaaa\" height=\"140\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"92\" x=\"7.89999\" y=\"39.85\"><\/rect> <path d=\"m10.0255,109.63574l43.99998,-68.99999l43.99999,68.99999l-43.99999,69l-43.99998,-69z\" fill=\"#56ff56\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"1.5\"><\/path> <path d=\"m110.0255,83.63574l43.99998,-68.99999l43.99999,68.99999l-43.99999,69l-43.99998,-69z\" fill=\"#56ff56\" id=\"svg_10\" stroke=\"#000\" stroke-width=\"1.5\" transform=\"rotate(9 154.02548217773426,83.63574981689442) \"><\/path> <path d=\"m110.9,75.85c0,0 0,1 -1,1c-1,0 -1,1 -1,1c0,0 -1.58578,0.58578 -3,2c-0.70711,0.70711 -1,2 -1,2c0,1 0,2 0,4c0,0 0,2 0,3c0,1 -0.38268,1.07612 0,2c0.5412,1.30656 1.61732,1.07612 2,2c0.5412,1.30656 1.29289,0.29289 2,1c1.41422,1.41422 0,3 0,4c0,0 0,1 0,2c0,1 -1,1 -2,1l-1,0\" fill=\"none\" fill-opacity=\"null\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <path d=\"m142.89999,150.85001c-1,0 -2,0 -2,0c0,1 0.70711,2.29289 0,3c-0.70711,0.70711 -2,0 -2,1c0,1 -0.30656,2.4588 1,3c0.92387,0.38269 1,0 2,0c0,0 0,1 0,2c0,1 0,2 0,2c0,1 0,2 -1,3l0,1l0,0l0,1\" fill=\"none\" fill-opacity=\"null\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <path d=\"m196.89999,89.85c0,0 0.38269,1.07612 0,2c-0.5412,1.30656 -1.07613,1.61732 -2,2c-1.30656,0.5412 -1,2 -1,3c0,1 0,1 0,2c0,1 0,2 0,3c0,0 0,1 0,2c0,1 0,2 0,2c0,1 0,2 0,3c0,1 0.70711,1.29289 0,2c-0.70711,0.70711 -1,1 -1,1c-1,2 -2.07613,1.61732 -3,2c-1.30656,0.5412 -1,1 -2,1l-1,0l-1,0l-1,0\" fill=\"none\" fill-opacity=\"null\" id=\"svg_13\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <path d=\"m142.89999,149.85001c-1,0 -2,0 -2,0c-1,0 -2.07613,-0.38269 -3,0c-1.30656,0.5412 -0.69344,2.4588 -2,3c-0.92387,0.38269 -1.07613,0.61731 -2,1c-1.30656,0.5412 -1,2 -1,3c0,1 0,1 0,2c0,1 0,2 0,3c0,0 0,1 0,2c0,1 1,1 1,2c0,0 0,1 0,2c0,1 0,2 1,2c0,0 0,1 0,3c0,1 0.70711,1.29289 0,2c-0.70711,0.70711 -2,2 -2,2c0,1 -1.29289,0.29289 -2,1c-0.70711,0.70711 0.30656,2.4588 -1,3c-0.92387,0.38269 -1,1 -1.99999,1l-1,0l-1,0\" fill=\"none\" fill-opacity=\"null\" id=\"svg_14\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <path d=\"m146.1905,54.08643l4.96559,0l1.5344,-6.49344l1.53441,6.49344l4.96559,0l-4.01724,4.01312l1.53448,6.49344l-4.01724,-4.01323l-4.01724,4.01323l1.53448,-6.49344l-4.01724,-4.01312z\" fill=\"#ffff00\" id=\"svg_18\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <path d=\"m140.23074,112.91822c2.06148,-8.85976 10.13841,0 0,11.39112c-10.13841,-11.39112 -2.06148,-20.25088 0,-11.39112z\" fill=\"#ffff00\" id=\"svg_19\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <path d=\"m162.12573,83.06821c2.47377,-8.85976 12.16609,0 0,11.39112c-12.16609,-11.39112 -2.47377,-20.25087 0,-11.39112z\" fill=\"#ffff00\" id=\"svg_20\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"1.5\"><\/path> <\/g> <\/svg><\/span><\/p>","options":["1750 cm<span class=\"math-tex\">$^2$<\/span>","3500 cm","3500 cm<span class=\"math-tex\">$^2$<\/span>"],"correct":"1","level":"3","hint":"<p>D\u1ef1a v&agrave;o h&igrave;nh v\u1ebd ta th\u1ea5y con di\u1ec1u l&agrave; h&igrave;nh thoi c&oacute; \u0111\u1ed9 d&agrave;i hai \u0111\u01b0\u1eddng ch&eacute;o b\u1eb1ng chi\u1ec1u r\u1ed9ng v&agrave; chi\u1ec1u d&agrave;i c\u1ee7a h&igrave;nh ch\u1eef nh\u1eadt.<\/p>","answer":"<p>D\u1ef1a v&agrave;o h&igrave;nh v\u1ebd ta th\u1ea5y con di\u1ec1u l&agrave; h&igrave;nh thoi c&oacute; \u0111\u1ed9 d&agrave;i hai \u0111\u01b0\u1eddng ch&eacute;o b\u1eb1ng chi\u1ec1u r\u1ed9ng v&agrave; chi\u1ec1u d&agrave;i c\u1ee7a h&igrave;nh ch\u1eef nh\u1eadt.<\/p><p>Do \u0111&oacute; di\u1ec7n t&iacute;ch con di\u1ec1u l&agrave;:<\/p><p>S =&nbsp;<span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>&nbsp;. 50 . 70 = 1750 (cm<span class=\"math-tex\">$^2$<\/span>)<\/p><p>V\u1eady \u0111&aacute;p &aacute;n l&agrave; <span style=\"color:#16a085;\"><strong>1750 cm<span class=\"math-tex\">$^2$<\/span><\/strong><\/span><\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"132","test":"3","date":"2021-08-28 13:33:02","option_type":"math","len":0},{"id":"6776","post_id":"4598","mon_id":"1158113","chapter_id":"1158129","question":"<p>M\u1ed9t khu v\u01b0\u1eddn h&igrave;nh ch\u1eef nh\u1eadt c&oacute; chi\u1ec1u d&agrave;i 30 m, chi\u1ec1u r\u1ed9ng 18 m.&nbsp;\u1ede gi\u1eefa khu v\u01b0\u1eddn, ng\u01b0\u1eddi ta x&acirc;y m\u1ed9t b\u1ed3n hoa h&igrave;nh thoi c&oacute; \u0111\u1ed9 d&agrave;i hai \u0111\u01b0\u1eddng ch&eacute;o l&agrave; 4 m v&agrave; 6 m. T&iacute;nh di\u1ec7n t&iacute;ch ph\u1ea7n c&ograve;n l\u1ea1i c\u1ee7a khu v\u01b0\u1eddn.<\/p><p><span class=\"svgedit\"><svg height=\"150\" width=\"200\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"152\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"124\" id=\"svg_1\" stroke=\"null\" width=\"198.00001\" x=\"2.5\" xlink:href=\"data:image\/png;base64,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\" y=\"9\"><\/image> <\/g> <\/svg><\/span><\/p>","options":["450 m<span class=\"math-tex\">$^2$<\/span>","24 m<span class=\"math-tex\">$^2$<\/span>","528 m<span class=\"math-tex\">$^2$<\/span>","540 m<span class=\"math-tex\">$^2$<\/span>"],"correct":"3","level":"3","hint":"<p>T&iacute;nh di\u1ec7n t&iacute;ch khu v\u01b0\u1eddn h&igrave;nh ch\u1eef nh\u1eadt v&agrave; di\u1ec7n t&iacute;ch b\u1ed3n hoa h&igrave;nh thoi.<\/p><p>Di\u1ec7n t&iacute;ch ph\u1ea7n c&ograve;n l\u1ea1i = Di\u1ec7n t&iacute;ch khu v\u01b0\u1eddn - Di\u1ec7n t&iacute;ch b\u1ed3n hoa<\/p>","answer":"<p>Di\u1ec7n t&iacute;ch khu v\u01b0\u1eddn h&igrave;nh ch\u1eef nh\u1eadt l&agrave;:<\/p><p>30 . 18 = 540 (m<span class=\"math-tex\">$^2$<\/span>)<\/p><p>Di\u1ec7n t&iacute;ch b\u1ed3n hoa h&igrave;nh thoi l&agrave;:<\/p><p><span class=\"math-tex\">$ {\\frac{4 .6}{2}}$<\/span>&nbsp;= 12 (m<span class=\"math-tex\">$^2$<\/span>)<\/p><p>Di\u1ec7n t&iacute;ch ph\u1ea7n c&ograve;n l\u1ea1i l&agrave;:<\/p><p>540 - 12 = 528 (m<span class=\"math-tex\">$^2$<\/span>)<\/p><p>V\u1eady \u0111&aacute;p &aacute;n l&agrave; <span style=\"color:#16a085;\"><strong>528 m<span class=\"math-tex\">$^2$<\/span><\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-08-28 13:42:14","option_type":"math","len":0},{"id":"6778","post_id":"4598","mon_id":"1158113","chapter_id":"1158129","question":"<p>M\u1ed9t m\u1ea3nh v\u01b0\u1eddn c&oacute; d\u1ea1ng nh\u01b0 h&igrave;nh v\u1ebd. \u0110\u1ec3 t&iacute;nh di\u1ec7n t&iacute;ch m\u1ea3nh v\u01b0\u1eddn ng\u01b0\u1eddi ta chia n&oacute; th&agrave;nh h&igrave;nh thang c&acirc;n ABCD v&agrave; h&igrave;nh b&igrave;nh h&agrave;nh ADEF c&oacute; k&iacute;ch th\u01b0\u1edbc nh\u01b0 sau: <strong>BC = 20 m, AD = 34 m, BM = 15 m, EN = 18m.<\/strong><\/p><p>H&atilde;y t&iacute;nh di\u1ec7n t&iacute;ch c\u1ee7a m\u1ea3nh v\u01b0\u1eddn.<\/p><p><span class=\"svgedit\"><svg height=\"200\" width=\"230\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g>&lt;title&gt;&lt;\/title><rect fill=\"#fff\" height=\"202\" id=\"canvas_background\" width=\"232\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g>&lt;title&gt;&lt;\/title><image height=\"159.00002\" id=\"svg_1\" stroke=\"null\" width=\"254.99999\" x=\"-12\" 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\" y=\"18.49998\"><\/image> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_2\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"79.9\" xml:space=\"preserve\" y=\"24\">B<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_3\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"34.9\" xml:space=\"preserve\" y=\"92\">A<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_4\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"182.9\" xml:space=\"preserve\" y=\"23\">C<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_5\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"216.9\" xml:space=\"preserve\" y=\"84\">D<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_6\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"8.9\" xml:space=\"preserve\" y=\"190\">F<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_7\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"176.9\" xml:space=\"preserve\" y=\"189\">E<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_8\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"88.9\" xml:space=\"preserve\" y=\"110\">M<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_9\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"169.9\" xml:space=\"preserve\" y=\"86\">N<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_10\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"123.9\" xml:space=\"preserve\" y=\"19\">20 m<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_11\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"114.9\" xml:space=\"preserve\" y=\"91\">34 m<\/text> <text fill=\"#000000\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"15\" id=\"svg_12\" stroke=\"#000\" stroke-width=\"0\" text-anchor=\"start\" x=\"138.9\" xml:space=\"preserve\" y=\"146\">18 m<\/text> <\/g> <\/svg><\/span><\/p>","options":["405 m<span class=\"math-tex\">$^2$<\/span>","1017 m<span class=\"math-tex\">$^2$<\/span>","612 m<span class=\"math-tex\">$^2$<\/span>"],"correct":"2","level":"3","hint":"<p>T&iacute;nh di\u1ec7n t&iacute;ch&nbsp;ph\u1ea7n v\u01b0\u1eddn&nbsp;h&igrave;nh thang c&acirc;n v&agrave;&nbsp;ph\u1ea7n v\u01b0\u1eddn h&igrave;nh b&igrave;nh h&agrave;nh<\/p><p>Di\u1ec7n t&iacute;ch c\u1ee7a m\u1ea3nh v\u01b0\u1eddn = Di\u1ec7n t&iacute;ch ph\u1ea7n v\u01b0\u1eddn&nbsp;h&igrave;nh thang c&acirc;n ABCD + Di\u1ec7n t&iacute;ch ph\u1ea7n v\u01b0\u1eddn h&igrave;nh b&igrave;nh h&agrave;nh ADEF<\/p>","answer":"<p>Di\u1ec7n t&iacute;ch c\u1ee7a ph\u1ea7n v\u01b0\u1eddn&nbsp;h&igrave;nh thang c&acirc;n ABCD l&agrave;:<\/p><p><span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>&nbsp;. ( BC + AD ) . BM&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>&nbsp;. ( 20 + 34 ) . 15&nbsp;= 405 (m<span class=\"math-tex\">$^2$<\/span>)<\/p><p>Di\u1ec7n t&iacute;ch ph\u1ea7n v\u01b0\u1eddn h&igrave;nh b&igrave;nh h&agrave;nh ADEF l&agrave;:<\/p><p>EN . AD&nbsp;= 18 . 34 = 612&nbsp;(m<span class=\"math-tex\">$^2$<\/span>)<\/p><p>Di\u1ec7n t&iacute;ch m\u1ea3nh v\u01b0\u1eddn l&agrave;:<\/p><p>405 + 612 = 1017&nbsp;(m<span class=\"math-tex\">$^2$<\/span>)<\/p><p>V\u1eady \u0111&aacute;p &aacute;n \u0111&uacute;ng&nbsp;l&agrave;<span style=\"color:#16a085;\"><strong>&nbsp;1017&nbsp;m<span class=\"math-tex\">$^2$<\/span><\/strong><\/span><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"132","test":"3","date":"2021-08-28 14:04:29","option_type":"math","len":0}]}
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