题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053046-76542.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053046-22481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053047-16887.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053047-91051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053047-89221.png)
A.16 | B.10 | C.8 | D.6 |
答案
解析
解答:解:∵截面圆圆心O到水面的距离OC是6,
∴OC⊥AB,
∴AB=2BC,
在Rt△BOC中,OB=10,OC=6,
∴BC=
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053047-16876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053048-27436.png)
∴AB=2BC=2×8=16.
故选A.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053036-42591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053036-18140.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053037-95312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053037-45320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053037-35490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053037-63044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053038-52758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053038-13737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053038-62316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053038-45721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053039-60008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053039-84738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053039-28757.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053039-91459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053040-73543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053040-85935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053028-77051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053028-79823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053028-73141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053029-15501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053028-79823.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053029-48041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053029-31937.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053029-48041.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053029-82616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053030-43862.png)
小题1:求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053030-75461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053028-79823.png)
小题2:当
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053030-80644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053024-90763.png)
小题1:(1)求圆锥
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053024-27677.png)
小题2:(2)若一小虫从点A出发沿圆锥侧面绕行到母线CA的中点B处,求它所走的最短路程是多少?
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053017-46263.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053018-36313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053018-52409.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105053018-12857.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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