{"common":{"save":0,"post_id":"8412","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4630","post_id":"8412","mon_id":"1159414","chapter_id":"1159497","question":"<p>M\u1ed9t b\u1ec3 cá có chi\u1ec1u dài 2 m, chi\u1ec1u r\u1ed9ng 1 m và chi\u1ec1u cao 8 dm. Tính th\u1ec3 tích c\u1ee7a b\u1ec3 cá.<\/p>","options":["<strong>A.<\/strong> 16 m³","<strong>B.<\/strong> 16 dm³","<strong>C.<\/strong> 1,6 dm³","<strong>D.<\/strong> 1,6 m³"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 1,6 m³.<\/span><\/p><p>\u0110\u1ed5i 8 dm = 0,8 m.<\/p><p>Th\u1ec3 tích c\u1ee7a b\u1ec3 cá là 2 x 1 x 0,8 = 1,6 (m³).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-15 08:04:56","option_type":"txt","len":1},{"id":"4631","post_id":"8412","mon_id":"1159414","chapter_id":"1159497","question":"<p>M\u1ed9t b\u1ec3 b\u01a1i d\u1ea1ng hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài 2,5 m, chi\u1ec1u r\u1ed9ng 2 m và chi\u1ec1u cao 1,5 m. Tính th\u1ec3 tích c\u1ee7a b\u1ec3 b\u01a1i.<\/p>","options":["<strong>A.<\/strong> 7,5 m³","<strong>B.<\/strong> 75 m³","<strong>C.<\/strong> 2,5 m³","<strong>D.<\/strong> 5 m³"],"correct":"1","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 7,5 m³.<\/span><\/p><p>Th\u1ec3 tích c\u1ee7a b\u1ec3 b\u01a1i là 2,5 x 2 x 1,5 = 7,5 (m³).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-15 08:07:40","option_type":"txt","len":1},{"id":"4632","post_id":"8412","mon_id":"1159414","chapter_id":"1159497","question":"<p>M\u1ed9t hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài là 14 cm, chi\u1ec1u r\u1ed9ng 10 cm, th\u1ec3 tích là<br \/>0,7 dm³. Tính chi\u1ec1u cao c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt.<\/p>","options":["<strong>A.<\/strong> 5 dm","<strong>B.<\/strong> 50 cm","<strong>C.<\/strong> 5 cm","<strong>D.<\/strong> 50 dm"],"correct":"3","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> 5 cm.<\/span><\/p><p>\u0110\u1ed5i 0,7 dm³ = 700 cm³.<\/p><p>Chi\u1ec1u cao c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt là 700 : 14 : 10 = 5 (cm).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-15 08:11:12","option_type":"txt","len":0}]}
