A stained glass window is shaped like a semicircle. The bottom edge of the window is 36 inches long. What is the area of the stained glass window? Round your answer to the nearest hundreth.
A semi circle is half of a circle, and since a circle is (pi)r^2, it would be 1/2 (pi) r^2. Since the radius is half the diameter, we would turn the 36 inches into 18 inches. So 18in is your radius. Plug it in and you've got it. :)
