four thin rods each of mass `m` and length `l` are joined to make a square. Find moment of inertia of all the four rods about any side of the square.

Explanation

To find the moment of inertia of a square made of four thin rods about any one side of the square, we can follow these steps:

### Step 1: Identify the Configuration
We have a square formed by four thin rods, each of mass \( m \) and length \( l \). We need to calculate the moment of inertia about one of the sides of the square.

### Step 2: Understand the Moment of Inertia
The moment of inertia \( I \) of a rod about an axis through one end and perpendicular to its length is given by the formula:
\[
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