1. The problem statement, all variables and given/known data 2. Relevant equations I know the solution is: dh/dt = -(cpi√h)/450 3. The attempt at a solution I know the give equation is dV/dT, and I know that V=h³... I figured that the volume at any point was equal to: V = dV/dt + Vo therefore I could equate h³= dV/dt + Vo but I think I'm still missing something... can anyone give me a clue as to how to solve this problem?