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2022-04-16 14:39:49
Diện tích xung quanh= (0,8 + 0,4 ) x 2 x 0,6=14,4(m2)
Diện tích một mặt là: 0,8 x 0,4 = 0,32(m2)
Diện tích toàn phần là: 14,4 + 0,32 = 14, 72(m2)