The second cylinder is taller correct?
8 in < 11 in
If the height is also larger, the base is most likely larger too.
Wouldn't the largest cylinder have a Larger surface area?
10% of 40= 4
1%= 0.4
30%= 4*3= 12
3%= 0.4*3=1.2
33%= 13.20
40- 13.20= 26.80