Area of the quarter sector Area of the entire circle = pi * r^2 Area of the quarter circle = pi r^2 / 4 r = 9 Area of the quarter circle = pi 9^2 / 4 Area of the quarter circle = pi 81/4 = 20.25 pi
Area of the triangle Area pf the triangle = 1/2 b*h b = h = r r = 9 Area of the triangle = 1/2 9 * 9 Area of teh triangle = 1/2 81 Area of the triangle = 40.5
Area of the shaded area The shaded area = Area of the 1/4 circle - area of the triangle The shaded area = (20.24 pi - 40.5)ft^2
