Perimeter of rectangle as a Variable

Last updated at August 4, 2026 by

A Rectangle has 4 sides

and opposite sides of a Rectangle are equal.

22.jpg

Let AB = l & BC = b

 

So, CD = AB = l

  & AD = BC = b

Perimeter of rectangle as a Variable - Part 2

Thus,

  Perimeter = Sum of all sides

           = AB + BC + CD + AD

           = l + b + l + b

           = 2 l + 2b

           = 2( l + b)

 

So we can write,

Perimeter of rectangle = 2( l + b)

    where l is length and b is width of rectangle

   

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