There's a question I've been having difficulty solving, and I would really appreciate it if you can explain to me how I can achieve the answer.

question:an above ground swimming pool in the shape of a cylinder, with diameter 5m, is filled at a constant rate to a depth of 1m. It takes 4h to fill the pool with a hose. Create an equation of a mathematical model for volume as a function of time.

1 answer

the surface of the water is a circle of diameter 5m, so its area is

25π/4 m^2

Since it takes 4 hrs to fill the 1m, pool, the water comes in at a rate of

25π/16 m^3/hr

So, after t hours, the volume of water in the pool is

v(t) = 25π/16 t m^3
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