题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122607-56720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122607-79506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122607-31226.png)
A.25p | B.45p | C.50p | D.100p |
答案
解析
试题分析:由题意可采用割补法,考虑到四面体
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122607-51158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122608-34406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122608-88811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122608-88811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122608-21305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122608-92830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122609-10629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122610-21117.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122610-46916.png)
核心考点
试题【四面体ABCD中,已知AB=CD=,AC=BD=,AD=BC=,则四面体ABCD的外接球的表面积为( )A.25pB.45pC.50pD.100p】;主要考察你对柱锥台的表面积等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122558-40969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122558-51207.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122558-48415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122559-47418.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122559-54709.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-29875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-23512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-91178.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-11807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-23512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-25931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-82355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122552-23512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122539-15148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122540-97542.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122540-59216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122540-85520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122540-60353.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122539-15148.png)
A.4 | B.2![]() | C.5 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122523-32030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122523-99515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122523-20114.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122523-66394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122523-19063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122523-38389.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122524-13716.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122527-92597.jpg)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122527-42478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122527-66028.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122527-63146.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021122528-89733.png)
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