Hey there!
So remember that the volume of a prism can be determined through this formula... l * w * h
Now if we apply that rule with this prism.... the volume will be found as 36 cubic centimeters...
Next let's check all the choices to see if one of the answers does not sum up to or multiply to 36 cubic centimeters...
After evaluation the answer that is NOT the volume of the prism is choice C or 6 + 3 + 2
I hope this helps! ^__^