The area of a square is given as $121 m^2$. We need to find the length of one side of the square.

1. Problem Description

The area of a square is given as $121 m^2$. We need to find the length of one side of the square.

2. Solution Steps

Let $A$ be the area of the square, and $s$ be the length of one side of the square. The area of a square is given by the formula:

$A = s^2$

We are given that $A = 121 m^2$. We need to find $s$.

So, we have:

$s^2 = 121$

To find $s$, we take the square root of both sides of the equation:

$s = \sqrt{121}$

Since $11 \times 11 = 121$, we have:

$s = 11$

The length of the side of the square is $11 m$.

3. Final Answer

The length of the side of the square is $11 m$.