Find the following questions at the depth of $20\text{m}$. The gravitational acceleration is $g = 9.8\text{m/s}^2$ and the density of water is $\rho = 1000\text{kg/m}^3.$

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1. Find the hydrostatic pressure at $20\text{m}$.
Answer (in Newtons per sq. meter):

2. Find the hydrostatic force on a square steel plate with sides $4\text{m}$ placed horizontally.
Answer (in Newtons):

3. Find the hydrostatic force on a square steel plate with sides $4\text{m}$ placed vertically so that the bottom is at $20\text{m}$.
Answer (in Newtons):

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