Question

2. At a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m. (a) Write and simplify an expression for the exact area of the sidewalk. (b) Find the approximate area of the sidewalk. Use 3.14 to approximate π. SHOW YOUR WORK!!!

Answer 1

Your expression will be the area of the outer circle minus the area of the inner circle, so it will be (3.14x11x11)-(3.14x9x9). The approximate area is 125.6 meters squared