640mm*640mm*170mm等于多少方m2(算面积)他的工式是怎么算的?
问题描述:
640mm*640mm*170mm等于多少方m2(算面积)他的工式是怎么算的?
答
640mm*640mm*170mm
=0.64m*0.64m*0.17m
=0.069632m^3.
按1m=1000mm换算.