2. A cylindrical tank is filled with dimethylformamide (DMF,SG=0.944) up to a height of 3.75ft. The tank is open to the atmosphere and has a diameter of 4.00 feet. An open end mercury manometer is attached to the side of the tank. Assume the atmospheric pressure is 1 atm and specific gravity of mercury is 13.6. a)What is the absolute pressure on the bottom surface of the tank (in psia)? b) What is the gauge pressure on the bottom surface of the tank (in psig)