Question

用硬纸板做一个棱长为5厘米的正方体，再做一个长、宽、高分别是7厘米，5厘米，3厘米的长方体？

Answer 1

每个正方形的边长都是5厘米。

每小格的边长是1厘米

Answer 2

其实就是在算长方体和正方体的表面积。

Answer 3

The moon body can't be used at all, and it has played more than 20 and attacked many long and high pictures. This mathematics has changed a lot of questions, and one question has not lived, as a report, You said that this is called Ben knows the result, the amino difference, that is, playing can not reach the depths of others. It must have been a plane.