Perimeter and Area of Square

The square is a special rectangle in which length and breadth are equal.

Perimeter of Square

Perimeter of square = 2 × (Length + Length) = 4 x Length or 4 times the length of the side of the square.

Example 1: A square carrom board is of side 90 cm. Find its perimeter.

Perimeter of carrom board = 4 × 90 cm = 360 cm

Area of Square

Area of square = length × length = (length)2 = (side)2

Example 2: The area of a square is 784 m2. Find its side.

Area of square = side × side = (side)2

784 = (side)2

side = √784

Side of square = 28 cm

Example 3: Find the area of square whose perimeter is 80 m.

Perimeter of square = 4 × (side)

4a = 80

a = 20 m

Area of square = (20)2 = 400 m2