1. The problem statement, all variables and given/known data A vertical cylindrical container contains 5590 gallons of gasoline and is 1.38 m in radius. Due to evaporation within the tank, the pressure on the top of the fluid is 2.5 times normal atmospheric pressure. The density of gasoline is 737 kg/m3 2. Relevant equations 3. The attempt at a solution converted gallons to Liters: 5590 gallons x 3.785L/1 gallon = 21160 L Found the height of cylinder: Vcylinder = πr2h 21160/(π×1.382) = 3536m Solve for Pressure using P = Po + ρgh = (101300 Pa × 2.5) + (737×9.8×3536) Plugged it all in and it was....wrong. :-/ Only thing I suspect may be wrong is the units I'm suppose to be using ( cm instead of m for example ). Or the possibility of the cylinder being closed when I assumed it was open. But everything else to me looks good. Please help.