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50 POINTS!!!
Find the area of the shaded regions. Give your answer as a completely simplified exact value in terms of π. (no approximations)

50 POINTS Find the area of the shaded regions Give your answer as a completely simplified exact value in terms of π no approximations class=

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Answer:

18 π cm^2.

Step-by-step explanation:

The area of the whole circle = π r^2 =  81π cm^2.

Since there are 360 degrees in a circle the area of the shaded region =  

80/360 * area of the circle.

This = 80/360 * 81 π

= 2/9 * 81 π

= 18 π

Answer:

18 pi ^2

I had a similar explanation to the one below. I believe that is the most simple way to come up with a answer.

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