Worth 99 points im so confused.

a. at a zoo, the lion pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle (blue) with a radius of 11 m. the inner edge if the sidewalk is a circle (orange) with a radius of 9 m. find the approximate area of the larger circle (blue)

b. find the approximate area of the smaller circle (orange)

c. find the approximate area of the sidewalk (shaded region between the blue and orange circles.)

use 3.14 for pi. show your work!

(use 3.14 pi on all three problems! )