1 . 如图,正方体
的棱长为1,
分别为棱
上的动点,那么三棱锥
的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/d51f0648-6b78-4bf7-9332-01b1763170be.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecba79b0285803b1bc62d406d568b016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec66c1d36c6c2be3d3fc4519dfca195e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/27/d51f0648-6b78-4bf7-9332-01b1763170be.png?resizew=172)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 某几何体的三视图如图所示,其中俯视图是正方形,那么该几何体的表面积是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/66a6643d-c6f8-4510-9606-568ef958c341.png?resizew=348)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/6/66a6643d-c6f8-4510-9606-568ef958c341.png?resizew=348)
A.32 | B.24 | C.![]() | D.![]() |
您最近一年使用:0次