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古代800里有多远
更新时间: 2021-01-24 16:47:42  

1、古代的方圆800里,就是800平方华里的面积,有四百平方公里大。

2、2平方华里=1平方公里=1平方千米。

3、也就是2的3次方乘以100平方华里,再除以2,就是400平方公里或平方千米。

4、2×2×2×100平方华里÷2=400平方公里。

关键词: 古代

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