A spherical tank in a petro-chemical plant has a radius of 5m.

If liquid is entering the tank at a rate of 1500 litres per second and
the depth is 3m how long will it take to fill the tank? Give your
answer in seconds.

1 answer

rate=volume(time)
rate*time=volume
time=volume/rate= 1.5m^3/(PI*25*3) seconds