Water is flowing at a rate of 5 m^3/s into the conical tank. (The conical tank looks like this: the whole height of the conical tank is 120 m, the height of the water ish, the width of the top of the conical tank is 60 m)

a. find the volumeVof the water as a function of the water levelh.

b. findhas a function of the timetduring which water has been flowing into the tank.

Help?