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I hate making these Math Help threads but I have no idea what to do with this one. If you can help me out I will love you forever and karma/cookies will be given. If you live in SLC I'll buy you some beer.
This is for a groundwater geo class that is heavily based on Calculus.
Here is problem: 25,000 acre feet of water/year is being diverted into a basin. Water seeps out of the bottom at a rate of .16ft/day and evaporation rate is 40 inches/year. The basin of these inputs and outputs is circular.
The question: What is the diameter of the reservoir when the inflow exactly matches the outflow?
(I'm assuming this is a partial derivative word problem but I hate these motherfuckers. Correct me if I wrong.)