If the perimeter of a square is 7/2m,use5/8 of its perimeter,what's the rest number?

问题描述:

If the perimeter of a square is 7/2m,use5/8 of its perimeter,what's the rest number?

perimeter:周长、square :正方形
正方形周长是7/2m,用了周长的5/8,还剩多少?
(1-5/8)*7/2m=21/16m
(如果没错应该是这样 )