A diver, 2 m tall and weighing 90 kg, is working in a vertical position with his head at 8 m depth. If we approximate his body as a cylinder, neglecting top and bottom, what is the total net force of water against him? If his body will dissolve 2.5-5 x 10 g air (bl. dy atm), how much extra air (L at STP) will his body eventually dissolve? Assume the body is essentially water.