What is the pressure due to 30 m height water column.
(water density)*g*(height)
= 1000 kg/m^3*9.8 m/s^2*30 m
= 2.94*10^5 N/m^2
= 2.94*10^5 Pascals
= 2.9 atmospheres
= 1000 kg/m^3*9.8 m/s^2*30 m
= 2.94*10^5 N/m^2
= 2.94*10^5 Pascals
= 2.9 atmospheres