To find out how much more volume Max's carton has when compared to Tucker's, you will need to find the volume of each and then compare them.
Max:
V = BH, where B is the base area
= 12 in^2 x 6 in
V = 72 cubic inches
Tucker:
V = BH
= 10 in^2 x 7 in
V = 70 cubic inches
Max's carton is 72 cubic inches and Tucker's carton is 70 cubic inches. Max's is 2 cubic inches greater.