One atmospheric pressure at sea level is equal to 760 cm of Hg.
At sea level, the average atmospheric pressure is equal to 76 cm of Hg.
At sea level , the atmospheric pressure is 76 cm of Hg . If air pressure falls by 10mm of Hg per 120m of ascent, what is the hight of a hill where the barometer reads 70 cm of Hg . State the assumption made by you.
Assumption: atmospheric pressure falls linearly with ascent.