What is the atmospheric pressure on the top of a mountain 3 km high if at the foot of it is 750 mm?

1) We convert the height of the mountain from kilometers to meters.

3 * 1000 = 3000 m.

2) We accept a change in pressure of 1 millimeter with an increase in height by 10 meters.

3) Find the difference in pressure at the top and at the bottom.

3000/10 = 300 mm Hg

4) Find the value of atmospheric pressure at the summit with a height of 3 km.

750 – 300 = 450 mm Hg

Answer: At atmospheric pressure at the foot of 750 mm Hg. At the top of a mountain 3 km high, atmospheric pressure will be 450 mm Hg.