The surface area is given by: S.A = 2 * (area of the top) + 2 * (area of the front) + 2 * (area of one side) Substituting values we have: S.A = 2 * (20) + 2 * (16) + 2 * (24) S.A = 120 cm ^ 2 Answer: The surface area of the rectangular prism is: S.A = 120 cm ^ 2