Tank Diameter	Gallons per Foot
6.15'	222.2
9.23'	500.6
12.31'	890.1
15.38'	1,390
18.46'	2,002
21.54'	2,726
24.62'	3,583
27.69'	4,494
30.77'	5,562
33.85'	6,731
36.92'	8,008
40.00'	9,399
43.07'	10,898
46.15'	12,513
49.23'	14,238
52.31'	16,075
55.39'	18,027
58.46'	20,078
61.53'	22,242
64.61'	24,524
67.69'	26,918
70.77'	29,423
73.85'	32,040
76.92'	34,760
80.00'	37,599
83.07'	40,540
86.16'	43,615
89.23'	46,775
92.31'	50,060
95.46'	53,445
98.46'	56,953
101.54'	60,572
110.77'	72,088
120.00'	84,597
150.00'	133,543
203.08'	424,301