题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122125-37871.jpg)
A.![]() | B.![]() | C. 12 | D.8 |
答案
解析
试题分析:由三视图知几何体是底面为边长为2的正方形的正四棱锥,由侧视图得斜高
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122126-73104.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122126-30338.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122121-31820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122109-23432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-25406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-56119.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-32066.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-14509.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-90767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-28315.png)
(1)求圆锥的侧面积和体积.
(2)求异面直线
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-95933.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122110-58526.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122051-77091.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122051-83449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-88575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-17146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-22191.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-55713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-30777.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-88575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122035-94312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-55443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-14548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-73481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-15057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-92456.png)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-72185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-47635.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122036-29222.png)
(2)求三棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122037-47889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122026-73278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122026-72532.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122026-11999.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122026-11999.png)
轴旋转一周,所得旋转体的体积为___________.
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