For this problem you solve the area of each figure, (The triangle and semicircle) and add them. The area of a triangle is (base * height) / 2 and the area of a semicircle is (pi*(r^2)) / 2 so we just plug in. for the triangle the height is 4.8 and the base is 3.6, so 4.8*3.6 / 2 or 8.64 for the area of the triangle. For the semicircle the radius is half of the diameter, which is 3.6, so the radius is 1.8. plugging in the radius, you get (1.8^2 * pi) /2 or 1.62 * pi, roughly 5.08 for the area. Therefore the total area is 8.64 + 5.08, or 13.72, which is the final area.
