A. The formula for volume is length x width height. the formula for area is length x width. the area of the base is 40cm^3 and the volume is 320cm^3. You just divide 320 by 40.
B. I: Find the surface area of each blue face by using l x w then add them up
II: find the volume of each cube by using l x w x h
C. I think some info is cut out.
Answers: A. 8cm^3
B. I: 66^3 II: 181cm^3