"A cylindrical can has a radius of 4cm. and a height of 12.2cm."

2. Determine the dimensions that will minimize the amount of material needed to construct a can with your volume.

(a)equation to be minimized.

(b)calculus solution with minimum dimensions.

(c)Justification of why it is a minimum.

(a). (2)πr^2 +2πrh

(b). I have trouble with. The equation to be optimized is the volume of a cylinder. But what would it be constrained by?