A closed cylindrical tank is to be constructed so that its total surface area is fixed
MATHEMATICS · Single correct · A Level · Mathematics · Differentiation · Differentiation
Problem
A closed cylindrical tank is to be constructed so that its total surface area is fixed. For the tank to have maximum capacity, what should be the ratio of its height h to the base radius r?
(a) h=34r
(b) h=2r
(c) h=r
(d) h=3r