Sand falls from an overhead bin and accumulates in a conical pile with a radius that is always three times its height. Suppose the height of the pile increases at a rate of 3 cm/s when the pile is 17 cm high. At what rate is the sand leaving the bin at that instant? E) Let V and h be the volume and height of the cone, respectively. Write an equation that relates V and h and does not include the radius of the cone. E (Type an exact answer, using 1: as needed.)