The image above represents a square.

To compute the area of a square requires one essential parameter which is the length of one side of a square.

The formula for computing the area of a square is:

A = l^{2 }

Where:

A = Area of a Square

l = Length of one side of a Square

Let’s solve an example

Find the area of a square which has a length of 6 ft.

This implies that:

l = length of one side of a square = 6

A = l^{2}

A = 6^{2}

A = 6 x 6

A = 36

Therefore, the **area of the square** is **36 ft ^{2}**.

**Calculating the Length of a Square when Area is Given**

The formula is l = √[A]

Where;

A = Area of a square

l = Length of a square

Let’s solve an example:

Find the length of a square where the area of a square is 81 ft^{2}.

This implies that;

A = Area of a square = 81 ft^{2}

l = √[A]

l = √[81]

l = 9

Therefore, the **length of the square** is **9 ft**.