Water is poured into the conical container at a rate of 5 cm³ s^-1.

After t seconds, the volume of water in the container, V cm3 is given by V = 1/12 πh³, where h cm is the height of the water in the container.

a. Find the rate of change of h when h = 5.

b. Find the rate of change of h when h = 10.