30,000
10,408 gallons.
7,646.4 gallons are needed.
About 18,402 gallons.
About 24 gallons.
Approximately 1,616 US gallons.
1.5x4x6x7.48 gallons/cubic foot=269.28 us gallons
13,594 US gallons of water.
If rectangular about 21,000 gallons if oval about 16,000 gallons
1,770 gallons.
My answer would be 18.75 gallons
15,320.1 US gallons of water.
About 4,650 gallons.