# If the barometer at the foot of the hill shows a pressure of 750 mm Hg. Art.,

If the barometer at the foot of the hill shows a pressure of 750 mm Hg. Art., and at the top – 761 mm Hg. Art., then what is the height of the hill?

First, you need to determine the difference in atmospheric pressure at the foot and at the top.

To do this, we subtract the pressure at the top from the pressure at the foot.

We get:

761 – 750 = 11 mm Hg

We accept the value of the change in atmospheric pressure by 1 mm Hg. with an increase in height of 10 meters. (A more accurate value is 10.5 meters).

Find the height of the top.

To do this, multiply the pressure difference by a constant height value.

We get:

11 * 10 = 110 meters.

Answer: The height of the top of the hill is 110 meters.

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