The pressure acting on a submarine is 3 × 10^5 Pa at a certain depth. If the depth is doubled, the percentage increase in the pressure acting on the…

The pressure acting on a submarine is $\displaystyle 3 \times 10^5 \mathrm{~Pa}$ at a certain depth. If the depth is doubled, the percentage increase in the pressure acting on the submarine would be : (Assume that atmospheric pressure is $\displaystyle 1 \times 10^5 \mathrm{~Pa}$ density of water is $\displaystyle 10^3 \mathrm{~kg} \mathrm{~m}^{-3}, \mathrm{~g}=10 \mathrm{~ms}^{-2}$ )