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In The Figure Below, Both Circles Have The Same Center, And The Radius Of The Larger Circle Is R. If The Radius Of The Smaller Circle Is 3 Units Less Than R, Which Of The Following Represents The Area Of The Shaded Region?

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xiao guguai answered
The Area Of The Shaded Region = pi (R^2-(R-3)^2)=pi(6R-9).

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