{"common":{"save":0,"post_id":"5901","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1259","post_id":"5901","mon_id":"1158530","chapter_id":"1158694","question":"<p>Mu\u1ed1n t&iacute;nh di\u1ec7n t&iacute;ch h&igrave;nh ch\u1eef nh\u1eadt ta l\u1ea5y chi\u1ec1u d&agrave;i&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;chi\u1ec1u r\u1ed9ng (c&ugrave;ng \u0111\u01a1n v\u1ecb \u0111o).<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/bird1.png\" \/><\/div>","options":["nh&acirc;n v\u1edbi","c\u1ed9ng","tr\u1eeb"],"correct":"1","level":"1","hint":"","answer":"<p>Mu\u1ed1n t&iacute;nh di\u1ec7n t&iacute;ch h&igrave;nh ch\u1eef nh\u1eadt ta l\u1ea5y chi\u1ec1u d&agrave;i&nbsp;<span style=\"color:#16a085;\"><strong>nh&acirc;n v\u1edbi&nbsp;<\/strong><\/span>chi\u1ec1u r\u1ed9ng (c&ugrave;ng \u0111\u01a1n v\u1ecb \u0111o).<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong>nh&acirc;n v\u1edbi<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-13 02:30:23","option_type":"txt","len":1},{"id":"1261","post_id":"5901","mon_id":"1158530","chapter_id":"1158694","question":"<p>Mu\u1ed1n t&iacute;nh &lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt; h&igrave;nh vu&ocirc;ng ta l\u1ea5y \u0111\u1ed9 d&agrave;i m\u1ed9t c\u1ea1nh nh&acirc;n v\u1edbi ch&iacute;nh n&oacute;.<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/3-me-con-soc.png\" \/><\/div>","options":["chu vi","di\u1ec7n t&iacute;ch"],"correct":"2","level":"1","hint":"","answer":"<p>Mu\u1ed1n t&iacute;nh <strong><span style=\"color:#16a085;\">di\u1ec7n t&iacute;ch<\/span><\/strong>&nbsp;h&igrave;nh vu&ocirc;ng ta l\u1ea5y \u0111\u1ed9 d&agrave;i m\u1ed9t c\u1ea1nh nh&acirc;n v\u1edbi ch&iacute;nh n&oacute;.<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong>&nbsp;di\u1ec7n t&iacute;ch<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-13 02:32:31","option_type":"txt","len":2},{"id":"1262","post_id":"5901","mon_id":"1158530","chapter_id":"1158694","question":"<p>T&iacute;nh di\u1ec7n t&iacute;ch h&igrave;nh ch\u1eef nh\u1eadt c&oacute; chi\u1ec1u d&agrave;i l&agrave; 3 cm v&agrave; chi\u1ec1u r\u1ed9ng l&agrave; 2 cm.&nbsp;<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/con-vat\/da-dieu.png\" \/><\/div>","options":["<strong>A. <\/strong>5 cm&sup2;","<strong>B. <\/strong>6 cm","<strong>C. <\/strong>6 cm&sup2;"],"correct":"3","level":"1","hint":"<p>Mu\u1ed1n t&iacute;nh di\u1ec7n t&iacute;ch h&igrave;nh ch\u1eef nh\u1eadt ta l\u1ea5y chi\u1ec1u d&agrave;i nh&acirc;n v\u1edbi chi\u1ec1u r\u1ed9ng (c&ugrave;ng \u0111\u01a1n v\u1ecb \u0111o).<\/p>","answer":"<p>Di\u1ec7n t&iacute;ch h&igrave;nh ch\u1eef nh\u1eadt c&oacute; chi\u1ec1u d&agrave;i l&agrave; 3 cm v&agrave; chi\u1ec1u r\u1ed9ng l&agrave; 2 cm l&agrave;:<\/p><p>3 x 2 = 6 (cm&sup2;)<\/p><p>&nbsp; &nbsp; &nbsp; &nbsp;\u0110&aacute;p s\u1ed1:&nbsp; 6 cm&sup2;<\/p><p>\u0110&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong>C.&nbsp;<\/strong>6 cm&sup2;<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-13 02:38:02","option_type":"txt","len":1}]}