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Perimeter of Rectangle – Formula and Examples


What is the Perimeter of a Rectangle?

The perimeter of a rectangle is equal to the total length of the boundary.

Let ABCD be a rectangle whose length be l and breadth be b.

Perimeter of a Rectangle

Perimeter = Length of the boundary

= AB + BC + CD + DA

= 2 x AB + 2 x  BC

= 2 ( AB + BC )

= 2( length + breadth)

Perimeter of Rectangle = 2(l + b) unit

Rectangular Perimeter Formula

Perimeter of Rectangle

Examples: Find the Perimeter of Rectangle

(a)  l = 38 m  and b = 22 m

Perimeter of Rectangle  = 2(l + b) = 2( 38 + 22)

= 2(60) = 120 m.

 

(b)bl = 30 m  and b = 20 m

Perimeter of Rectangle = 2(l + b) = 2( 30 + 20)

= 2(50) = 100 m.