Question

长7.6米宽4.4米高2.9米怎么算面积？

Answer 1

如果是长方体就有六个面，(7.6x4.4+7.6x2.9+4.4x2.9)x2=(7.6x4.4+12x2.9)x2=136.48，它的面积是136.48平方米

Answer 2

表面积=(7.6×4.4+7.6×2.9+4.4×2.9)×2
={7.6×4.4+2.9×(7.6+4.4)}
=(7.6×4.4+2.9×12)
=33.44+34.8
=68.24