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51问答网 > 长方形一间房子，长5米30 高和宽都是2米90，谢谢计算一下有多少平方。

长方形一间房子，长5米30 高和宽都是2米90，谢谢计算一下有多少平方。

2025-03-15 21:38:41

推荐回答（2个）

回答1：

5米30=5.3米，2米90=2.9米
地面和天花都是：5.3×2.9=15.37平方米；
长的两面都是：5.3×2.9=15.37平方米
宽的两面是：2.9×2.9=8.41平方米

除地面外，共有：15.7×3+8.41×2=47.1+16.82=63.92平方米

回答2：

平方：5.3*2.9=15.37平方

立方：5.3*2.9*2.9=44.573立方米

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