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By finding the number of unit squares that are required to fill a shape, we can find its
area. The total number of unit squares in a shape give its area.
Consider a square of each side 3 cm long. It can be filled with 3 rows and 3 columns
of unit squares.
The square can be shown on top of a 10 x 10 grid with shaded inside the square.
Area of each unit square = 1 sq. cm
No. of squares = 3 x 3 = 9
So, total area = 9 sq. cm
In other words, the area of a square is the product of the length of each side with
itself. That is,
Area A = s x s where s is the length of each side of the square.
For example, the area of a square of each side of length 8 feet is 8 times 8 or 64
square feet.
