Size Gallons / Liters Perimeter 14' x 28' 13,200 / 50,000 99' 16' x 32' 16,800 / 63,600 111' 18' x 36' 24,300 / 92,000 123' 18' x 38' 25,500 / 96,500 127' 20' x 40' 30,900 / 117,000 135' 20' x 42' 32,100 / 121,500 139'