Posted by LO on Friday, August 3, 2012 at 4:46am.
Pressure at the bottom of a water column of height h = d*g*h
where, d=density of water(1000Kg/m^3)
g=9.8 m/s^2 & h=30 m
Calculate P yourself.
Atmospheric pressure should be added to Ajayb's answer.
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