Dоnnа is plаnning tо lаndscape her backyard and is thinking оf having a fake grass area for her pets and a small picnic area on the side. She plans to put the grass on a rectangular area and right next to it is a picnic area in a semi-circular shape. The figure below shows the shape of this grass and picnic area: She plans to put fencing around the border of the entire area, but the border between the grass and picnic area will not be fenced. If she has a total of 50 feet of fencing to use, what is the largest possible area of both grass and picnic areas? Round your answer to the nearest whole number. Show all steps of your work on your paper, including the unit for the final answer. (5 points)