Find the area of the shaded regions below. Give your answer as a completely simplified exact value in terms of π (no approximations).
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Find the area of the circle.
If the radius is 4cm, then we can use the equation π r^2
π (4)^2
4^2 = 16
16π
Find the area of half the circle.
Cut that in half
8π
Find the area of the two triangles.
Then subtract those, and you're done!