1. The problem statement, all variables and given/known data ((I cannot, for the love of life, understand related rates, so please bear with me. Thank you! )) A cylindrical tank with radius 5m is being filled with water at a rate of 3m3/min. How fast is the height of the water increasing? I'm having trouble interpreting this question - actually, most related rates questions, having trouble differentiating between what I would call the volume and what not. 2. Relevant equations v= (pi)r2h 3. The attempt at a solution So, I'm gonna say that I know the rate of change of the volume - which means I need to get the height in terms of the volume? since v= (pi)r2h h= v/((pi)r2) h' = (dy/dx [v]((pi)r2) - dy/dx[(pi)r2](v))/((pi)2r4) h' = (3(2pir^2) - 2pirv)/ ((pi)2r4) I'm pretty sure this is wrong since I ended up with a "v" in my numerator which I don't know the value of. How would I go about solving this?