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2022-03-29 19:54:09
2022-03-29 19:54:09
2022-03-29 19:54:09
2022-03-29 19:54:09
2022-03-29 19:54:09
2022-03-29 19:54:09
2022-02-14 15:22:09
2022-02-14 15:21:06
Diện tích xung quanh của hình hộp chữ nhật đó là : ( 5 + 4 ) x 2 x 3 = 54 ( dm2 )
Diện tích 2 mặt đáy là : ( 5 x 4 ) x 2 = 40 ( dm2 )
Diện tích toàn phần là : 54 + 40 = 94 ( dm2 )
2022-02-13 16:52:55
2022-02-13 16:50:27