Prove that the average pressure of a liquid (density p) on the walls of the container filled upto height h with liquid is `1/2 h rhog`.

Explanation

To prove that the average pressure of a liquid (density \( \rho \)) on the walls of a container filled up to height \( h \) with the liquid is given by \( \frac{1}{2} \rho g h \), we can follow these steps:

### Step 1: Understand the Pressure at a Depth
The pressure at a depth \( y \) in a liquid is given by the formula:
\[ P = \rho g y \]
where:
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