#### mailman85

a)find the depth y(t) of water remaining after t hours

b)when will the tank be empty?

c)if the initial radius of the top surface of teh water is 2ft, what is the radius of the circuluar hole in the bottom

by using dV/dt=-a(2y)^(1/2) where a is the area of the bottom of the hole of the tank, I solved parts a and b. I found a) y=(8-7t)^(2/3) and b) 1.143 hrs. I am having trouble with part c. Can you help? Thanks.