Air pressure, P, decreases exponentially with the height, h, in meters above sea level: P = P0e-0.00012h where P0 is the air pressure at sea level. (a) At the top of Mount McKinley, height 6198 meters (about 20,330 feet), what is the air pressure, as a percent of the pressure at sea level? I think I need to know the air pressure at sea level to answer this question but I'm not given it... Does anyone know it if i need it, and if I don't.. how do i solve the problem without it? (b) The maximum cruising altitude of an ordinary commercial jet is around 12,000 meters (about 39,000 feet). At that height, what is the air pressure, as a percent of the sea level value? Same question for this one.