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!!!

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

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