We are asked to solve for the surface area of the described figure in the problem. We can conclude that the given figure is a rectangular prism since it was being mentioned in the problem that the height is laid flat. Therefore, the formula for the surface area is SA = PH + 2B where "P" stands for the perimeter of the rectangle and "B" stands for the area of the rectangle while "H" is for the height. Solving for P, we have it: P = width + length + width + length P = 10 + 5 + 10 + 5 P = 30 inches Solving for B, we have it: B = length * width B = 10 * 5 B = 50 inches squared Solving for the surface area, we have it: SA = PH + 2B SA = 30*7 + (2*50) SA = 310 inches squared
