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

Answer:
27π cm^2
Step-by-step explanation:
The area of a circle is given by the formula ...
A = πr^2
So, the area of a circle with radius 6 cm is ...
A = π(6 cm)^2 = 36π cm^2
The shaded portion of the given figure is 3/4 of a full circle of radius 6 cm, so has an area of ...
(3/4)(36π cm^2) = 27π cm^2 . . . . shaded area