How many gallons are in a 4ft x 1.5 ft x 1ft fish tank?

The answer is found by multiplying the radius squared times pi(3.12) times the length to find the volume. 0.5ft. x 3.12 x 3ft. =1.57 ftcu. Now multiply the answer times a conversion factor of 7.48051948 to get gallons. 1.57ftcu. x 7.48051948 = 11.75 gal.