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正方体的棱长如何计算
更新时间: 2020-10-28 00:00:00  

正方体的棱长=根号表面积/6,用六个完全相同的正方形围成的立体图形叫正六面体,也称立方体、正方体。正六面体是一种侧面和底面均为正方形的直平行六面体,即棱长都相等的六面体。正六面体是特殊的长方体。

正六面体的动态定义是:由一个正方形向垂直于正方形所在面的方向平移该正方形的边长而得到的立体图形。

关键词: 正方体 如何 计算

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