A rectangular prism. A rectangle has a base of 14 inches and height of 17 inches. A rectangle has a base of 15 inches and height of 14 inches. A rectangle has a base of 14 inches and height of 8 inches. 2 triangles have a base of 15 inches and height of 8 inches. Devon wants to build a ramp with the dimensions shown. How much wood does he need? 470 in.2