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[Data Sufficiency]

试题详情

题目:

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

选项:

答案:

D

提问:

(AE-DE)/2即小圆半径 ——为什么?

解答:

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阅读565
解答: sysadmin

提问:

(AE-DE)/2即小圆半径 ——为什么?

解答:

点赞0
阅读566
解答: sysadmin老师

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