88÷(4+7)=8
长,8×7÷2=28
宽,8×4÷2=16
面积:28×16=448
一个周长是88厘米,长与宽的比是7:4.长方形的长宽各是多少厘米?面积是多少平方厘米
一个周长是88厘米,长与宽的比是7:4.长方形的长宽各是多少厘米?面积是多少平方厘米
其他人气：891 ℃时间：2019-10-23 04:13:29
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