<PRE><B>Question 559451</B>
Water in a storage tank 25 feet in diameter and 30 ft deep rises 1.8 feet in one hour.
:
Find the no. of hrs to fill at 1.8 ft/hr rise
{{{30/1.8}}} = 16{{{2/3}}} hrs
:
Find the number gallons in the full tank (g); (7.481 gal in 1 cu/ft)
g = {{{pi*12.5^2*30*7.481}}}
g = 110,167 gallons
:
What is the Gallons per Minute (GPM) flow into the tank.
change 16{{{2/3}}} hrs to minutes: 60*16,66667  = 1000 minutes
{{{110166.8/1000}}} ~ 110 gal/min

 How long will it take to fill from empty? 16 hrs, 40 min</PRE>