What is the gauge pressure at this depth?

Question

The depth of the Pacific Ocean in the Mariana Trench is 36,198 ft. What is the gauge pressure at this depth?

Answer 1

The gauge pressure due to the liquid is given by:

P = density * acceleration due to gravity * height

Density of water. = 1000 kg /m3

height = 36198*0.3048 m (as 1 ft = 0.3048 m)

acceleration due to gravity (g ) = 10 m /S2 (approximate)

P = 1000 * 10 * 36198*0.3048 Pascal