Explanation:
Given the cube has a length of 1/3 in. The volume of the cube was:
V=length×width×height
V=1/3×1/3×1/3
V=(1/3)^3
V=1/27 in^3
thus the volume of the prism will be given by:
volume=[volume of cube]×[number of cubes]
volume=1/27×84=3 1/3 in^3