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116问答网 > 下图中的大正方形的边长是五厘米，小正方形的边长为四厘米。阴影部分的面积是多少平方厘米？

下图中的大正方形的边长是五厘米，小正方形的边长为四厘米。阴影部分的面积是多少平方厘米？

2025-03-16 01:35:19

推荐回答（3个）

回答1：

解5×5+4×4-1/2×4×4-1/2×1×5-1/2×4×(4+5)=12.8
用总面积减去三个三角形的面积，就是要求的阴影部分的面积
希望可以帮助你，有疑问可以继续提问哦！

回答2：

=5*5+4*4-(1/2)*5*(5+4)-(1/2)*4*4-(1/2)*5*(5-4)
=25+16-(1/2)(45-16-5)
=41-12
=29平方厘米

回答3：

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