pool volume is 15 x30x4 = 1800 cu ft
there are 7.48 gallons in one cu ft
7.48*1800 = 13,464 gallons
depth of pool is 12 x 4 = 48 inches
13464/48 = 280.5 gallons per inch
7,480.52 gallons for every inch of depth
478.75 gallons for each inch of water depth.
44.883 gallons for each inch of depth. (rounded) 538.6 gallons for each foot of depth. (rounded)
22.44 gallons for each inch of the water's depth.
19" x 42" x 6" = 4,788 cubic inches = 20.727 gallons (rounded)
2000 Gallons
This cylinder has a volume of 3.3 US gallons or 2.75 Imperial gallons.
If the bottom is flat and level, then it takes 239.38 gallons for each inch of the water's depth.
111 gallons of water.
14.7 gallons of water.
5.5 gallons per 15 feet of 3-inch pipe.
Depends on how many seats, depth of the water, curvature of the corners/bottom/seats. Too many factors.