Pressure 750 millimeters of mercury column 2 kilometers high what is the pressure outside the plane?

Since the pressure level changes by 11 millimeters of mercury with an increase in height by 10 meters, the pressure difference outside the aircraft and at the surface of the Earth will be:

2 km = 2000 meters.

2000/10 = 200 mm Hg

In order to find the pressure outside the plane, it is necessary to subtract the difference from the pressure at the Earth’s surface.

We get:

750 – 200 = 550 mm Hg

Answer: Outside the plane, atmospheric pressure is 550 mm Hg.