Let r : radius of cylinder h : height of cylinder R : radius of sphere Volume of cylinder, V=πr2h. I Given : h=r+3 But the specific value of neither r nor h is known. ∴ I alone is not sufficient. II. Given : R = 3 units We can have two cases
(i) R = 3 r = 3 h = 12 V=πr2‌‌h=108πcu units
(ii) R= 3 r = 6 h = 6 V=πr‌‌h=216π cu units ∴ II alone is not sufficient. I & II. The data given is the statements I & II are not consistent. In both the cases of the statement II, h≠r+3. ∴ I and II together are sufficient.