选择题
2010 AMC 8 Problem 19: Area Between Concentric Circles
The two circles pictured have the same center C. Chord AD is tangent to the inner circle at B, AC is 10, and chord AD has length 16. What is the area between the two circles?
A.
36π
B.
49π
C.
64π
D.
81π
E.
100π