AMC 8 2010 Problem 19

AMC8 2010 年第 19 题

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The two circles pictured have the same center C. Chord \overlineAD is tangent to the inner circle at B, AC is 10, and chord \overlineAD has length 16. What is the area between the two circles?

下图中的两个圆是同心圆，圆心均为 C。弦么这两个圆之间区域的面积是多少？和圆切于 B，AC 长为 10，弦长为 16。那

A. $36 \pi$
B. $49 \pi$
C. $64 \pi$
D. $81 \pi$
E. $100 \pi$

正确答案 · Correct Answer

C

解析 · Solution

解析整理中

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