Question

How many gallons are needed to fill a cylinder with a radius of 2.75 and a height of 13.75?

Answer 1

assuming R = 2.75 fringbats

and h = 13.75 fringbats
volume = pi R^2 h = 3.14159 * (2.75^2) * 13.75 = 326.7 cubic fringbats
gallons = 326.7 fringbats^3 * ( number of gallons per cubic fringbat)

Answer 2

just for reference, 1 gallon = 231 in^3

:-)