Question

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

Answer 1

• 40π

Explanation:

Area of circle:

• A = πr²

Area of α degree sector:

• S = πr²*α/360

The shaded area is:

• S = π*10²×(72*2)/360 = 100π×144/360 = 40π