### Theory:

Now, we shall find the area of a square.

Let us consider a square $$ABCD$$ with sides of length $$a$$ units.

Since the length and breadth of the square are equal. Then, the area of the square $$ABCD$$ is given by:
Area of the square $$=$$ Product of side and side
$$A=a \times a$$ $$sq. \ units$$

Therefore, the area of the square is $$a \times a \ sq. units$$.
Example:
1. Let the side of a square be $$8 \ cm$$. Find the area of the square.

Solution:

Side of a square, $$a=8 \ cm$$.

Area of the square $$=$$ Product of side and side

Area, $$A=a \times a \ sq. units$$

Substituting the known values in the formula, we have:

$$A=8 \times 8 \ sq. cm$$

$$A=64 \ sq. cm$$

Thus, the area of the square is $$64$$ $$sq. \ cm$$.