The answer to this problem would be B. Here are the steps: So, the dimensions of the prism are: 9,3, and 7. Multiply them all: 9×3×7=189 Lastly: you multiply 189×1/3=63 yd^3 Incase you are wondering, since each cube is 1/3 in length you multiply that by the volume of the prism. Hope this helps (:
