Class 6 Maths Mensuration Perimeter of Rectangle and Square

Perimeter of Rectangle and Square

Perimeter is the distance covered along the boundary forming a closed figure when you go round the figure once.

Perimeter of the following regular figures is as follows:

1. Perimeter of a Rectangle: A rectangular has 4 sides. Out of these four sides, opposite sides are equal in length. Let the sides be a and b

Perimeter of a Rectangle = Sum of all sides

                                        = a + a + b +b   = 2a+2b

                                       = 2(a+b)

So we get : Perimeter of a rectangle = length + breadth + length + breadth

i.e. Perimeter of a rectangle = 2 × (length + breadth)

 

2. Perimeter of a square: A square has 4 sides and they are equal in length. Let the side of a square be l

Perimeter of a square = Sum of the lengths of the sides of the square

                                             = l +l + l + l

                                            = 4l

Perimeter of a square = 4 × length of a side

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