Leaking oil tanks have become such an environmental problem that the federal government has implemented a number of rules to reduce the problem. A flow rate from a leak from a small hole in a tank can be predicted from the following relation: Q=0.61S2p where Q is the leakage rate ( gal/min ) S is the cross-sectional area of the hole causing the leak (in. 2 ) p is the pressure drop between the inside of the tank opposite the leak and the atmospheric pressure (psi) is the fluid density (lb/ft3) To test the tank, the vapour space is pressurised with N2 to a pressure of 23psig. If the tank is filled with 73in. of gasoline (sp. gr. =0.703) and the hole is 1/4in. in diameter, what is the value of Q (in cubic feet per hour)? [ 3 marks]