Question

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

Answer 1

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!