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求助,CDer帮帮忙

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楼主
发表于 2009-10-20 11:46:00 | 只看该作者

求助,CDer帮帮忙

 

 我总是觉得这道题要选D,求解答~ 

 我总是觉得这道题要选D,求解答~ 

In the figure, points A, B, C, D, and E lie on a line.  A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller circle, and E is on the larger circle.  What is the area of the region inside the larger circle and outside the smaller circle?

(1)     AB = 3 and BC =2

(2)     CD =1 and DE = 4

                  

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.


[此贴子已经被作者于2009/10/20 11:46:56编辑过]
沙发
 楼主| 发表于 2009-10-20 16:09:00 | 只看该作者

大家帮忙解答下呀~~

板凳
 楼主| 发表于 2009-10-27 08:47:00 | 只看该作者
ding~~
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