I think the shaded region for this problem will the part of the circle that is not covered by the triangle. First, determine the area of the circle by the equation, A = πD²/4 Substituting the given diameter, A = π(16 ft)²/4 = 200.96 ft² Then, determine the area of the triangle with the equation, A = bh/2 Since the base of the triangle is the diameter, b = 16 ft. Then, its height will be half the height and that will be equal to 8 ft. Substituting, A = (16 ft)(8 ft) / 2 = 64 ft² The difference between the two areas is 136.96 ft².
