名校
解题方法
1 . 如图,圆台
的轴截面为等腰梯形
,
,
,
,圆台
的侧面积为
.若点C,D分别为圆
,
上的动点且点C,D在平面
的同侧.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/38910484-ae81-496f-96ff-0784986be22b.png?resizew=207)
(1)求证:
;
(2)若
,则当三棱锥
的体积取最大值时,求多面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fee8f3cec7f73237eeb6119505b624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23ebc15ea66abe2eb975cf527b368dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5fdcd878ae4edaff14f1647ecc36e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/570f8b295ee0c7c60e6fe1dbf054ff52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997b5842f3d4eae1989debee9ae41b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fee8f3cec7f73237eeb6119505b624.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/38910484-ae81-496f-96ff-0784986be22b.png?resizew=207)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143bc52bf615596ee5d707e8c9592018.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a889f4f060164fb2fc57471b93183633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c380651bb919db7111650d73a46c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e10df339e7f7055c5699236359ceaea.png)
您最近一年使用:0次
2020-04-08更新
|
1327次组卷
|
3卷引用:四川省泸州市泸县第二中学2020届高三下学期第四次学月考试数学(文)试题
四川省泸州市泸县第二中学2020届高三下学期第四次学月考试数学(文)试题云南师范大学附属中学2019-2020学年高三适应性月考(六)数学(文)试题(已下线)考点24 空间几何体体积及表面积(练习)-2021年高考数学复习一轮复习笔记