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Please help. I've been trying to figure this out for an hour and I still don't understand how it's 72. I feel really stupid because it's probably easy to do.

Please help. I've been trying to figure this out for an hour and I still don't understand-example-1
User Kerrilynn
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1 Answer

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Answer:

C.
72\pi

Explanation:

The radius of the circle is 24 units, then the area of the whole circle is


\pi r^2=\pi \cdot 24^2=576\pi \ un^2.

The shaded circle is limited by 45° angle, so its area is


(45)/(360)=(1)/(8)

of the area of the whole circle.

The area of the shaded circle is


(1)/(8)\cdot 576\pi =72\pi \ un^2.

User Bharath Ram
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