The area of any polygon is the amount of space it occupies or encloses. It is the number of square units inside the polygon. The area is a two-dimensional property, which means it contains both length and width. The area is usually measured in units like square meters, square feet, or square inches. Area of larger shapes, like fields or cities is measured in square kilometres, hectares, or acres.
In a square, since all the four sides are equal, Area = w × h becomes