名校
解题方法
1 . 如图所示,在四棱锥
中,
,
,点M在线段SB上,且
平面SAD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/1d8299e5-4fae-468f-a556-1fd493f32a59.png?resizew=233)
(1)求
的值,并说明理由;
(2)若
,
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bce559fceb4731f8d4323410075a22b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871ea1fe36ff3d2414bce1a2e507dd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa14afe6f0aad22e8e869c39a60be657.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/1d8299e5-4fae-468f-a556-1fd493f32a59.png?resizew=233)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7679c7f87ba0d46225bad5baf15fb3af.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c3ec174b1ce835cc8737ff6ce57e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2095837b7420f07fc9ae946ece406df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
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2022-11-26更新
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3卷引用:2022年黑龙江省哈尔滨工业大学附属中学校高二学业水平测试数学练习试题
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