Answer: 11.5m^3 Explanation: The volume of a rectangular prism (R): length x width x height Replacing with the values given and solving for v(Volume) V(R) = 4x 2 x 1 V(R) = 8m3 Volume of a triangular prism (T): base area X height Base area = 1/2 x base × height (of the triangular base) A = 1/2 x1x 3.5 = 1.75m2 Back with the volume formula: V (T)= Ax h= 1.75 x 2 = 3.5m3 Adding both volumes: 8 +3.5 = 11.5 m3 Hope this explains it