在一个正方形鱼塘的四周围绕着一条宽2米的小路,小路的面积是160平方米,正方形鱼塘的面积是多少平方米?
人气:135 ℃ 时间:2019-08-21 15:14:11
解答
小路的四个角面积为4*2*2=16平方米.
小路的四段面积为160-16=144平方米
每段面积为144/4=36平方米,长为36/2=18米
正方形鱼塘的面积是18*18=324平方米
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