Aabc is similar to adef. the perimeter of aabc is five times the perimeter of adef.
the area of aabc is 100 square centimeters. the area of adef is
square centimeters.

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π