100%对的
设宽为x,则长为1.5x
2（x+1.5x)=40
所以x=8
一个长方形的周长是40厘米,长是宽的1.5倍,这个长方形的面积是多少平方厘米?
一个长方形的周长是40厘米,长是宽的1.5倍,这个长方形的面积是多少平方厘米?
数学人气：139 ℃时间：2019-09-26 14:36:29
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