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 11m. 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 j, l

Diameter =2r6=2r r=3 for the radius of the flowerbedif we were to include the sidwalk around the bed the diameter would strechout another meter in both directions meaning adding 2meters to the diameter making the new diameter 6+2=8 and 8/2=4 so 4=radius of the circle including the sidewalk. find the area of the big circle and subtract the area of the smaller circle to find the area of the side walk.small circle= pi*3 squared