Give reasons for the following:
Walls of the water reservoir of a dam have to be made wider at the bottom.

Explanation

To understand why the walls of a water reservoir of a dam need to be made wider at the bottom, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding Pressure**:
- Pressure is defined as the force applied per unit area. It can be mathematically expressed as:
\[
\text{Pressure} (P) = \frac{\text{Force} (F)}{\text{Area} (A)}
...