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Two circles have the same center $C.$ (Circles which have the same center are called concentric.) The larger circle has radius $10$ and the smaller circle has radius $6.$ Determine the area of the ring bet`ween these two circles. 

 Sep 13, 2020
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\(10^2\pi-6^2\pi=100\pi-36\pi=\boxed{64\pi}\)

 

:)

.
 Sep 13, 2020

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