Question

五年级上册数学学习乐园61页智慧冲浪第一题怎么做

如图 正方形的边长是0.9分米，求平行四边形的面积。

Answer 1

正方形也是一种特殊的平行四边形，平行四边的的面积都是 底X高
图中平行四边形的底是0.9，高也是0.9，面积就是0.9X0.9=0.81平方分米

Answer 2

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Answer 3

平行四边形的面积就是底边*高
平行四边形的面积：0.9*0.9=0.81平方分米。

Answer 4

标准作图是学数学的关键。。。看你这图画的，唉！！！！！！

Answer 5

0.9*0.9=0.81