A slow leak developed in a tire (assume constant volume), in which it takes 3 hr for the pressure to decrease from 30 psig to 25 psig. The air volume in the tire is 0.5 ft3, and the temperature remains constant at 60 oF. The mass flow rate of the air is given by m=0.68pA/?(RT). Calculate the area of the hole in the tire. Atmospheric pressure is 14 psia.