如图,网络纸上绘制的是某质地均匀内部为空的航天器件的三视图(图中小方格是边长为1cm的正方形),该器件由平均密度为
的合金制成,则该器件的质量为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b135ec9c378b22efc3776ec00c36ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/3/3975fc29-4294-43de-9bba-bf60721dc783.png?resizew=213)
A.390π g | B.342π g |
C.260π g | D.228π g |
更新时间:2023/05/29 16:16:07
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【推荐1】陀螺是中国民间较早的娱乐工具之一,它可以近似地视为由一个圆锥和一个圆柱组合而成的几何体,如图1是一种木陀螺,其直观图如图2所示,
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【推荐2】某几何体的三视图如图所示(单位:
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