Answer by
wingdog987 (154)

Correct answer.
Gallons=area x average depth x 7.5.
To figure area: length X width
To figure average depth: (shallow end + deep end) divide by 2
example: 3.5 feet + 8.5 feet) divide 2 = 6 feet
example: gallons =(50feet x 24feet) x 6 feet x 7.5 gallons = 54,000.