A dam has broader walls at the bottom than at the top. Explain.

Explanation

**Step-by-Step Solution:**

1. **Understanding Pressure in Fluids:**
- The pressure exerted by a fluid at a certain depth is given by the formula:
\[ P = h \cdot \rho \cdot g \]
where \( P \) is the pressure, \( h \) is the height (or depth) of the fluid, \( \rho \) is the density of the fluid, and \( g \) is the acceleration due to gravity.
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