Question -
Answer -
Let r and h bethe radius and height of the cylinder respectively.
Then, volume (V) of the cylinderis given by,
Surface area (S) of the cylinderis given by,
∴By second derivative test, the surface area is theminimum when the radius of the cylinder is
Hence, the requireddimensions of the can which has the minimum surface area is given by radius =
and height = 