Question

The Perimeter of a rectangle is 23cm
& its width is 4 cm .find its lenght

Answer 1

Step-by-step explanation:

Perimeter of reactangle=2 (l+b)

23=2 (l+4)

23/2=l+4

23/2-4=l

23-8/2=l

15/2=l

7.5=l

l=7.5 cm

Length=7.5 cm

Answer 2

Answer:

Given :

Breadth of the rectangle = 4 cm.

Perimeter of the rectangle = 23 cm.

To find :

Area of the rectangle =?

Formula Used :

Perimeter of the rectangle = 2( length +breadth)

Step-by-step explanation :

It is Given that,

Perimeter of the rectangle = 23 cm.

As We know that,

Perimeter of the rectangle = 2(length + breadth)

Substituting the values in the above formula, we get,

23 = 2(4 + lenght )

23 = 8 + 2 length

2 length = 23 - 8

2 length = 15

lenght = 15/2

lenght = 7.5 cm.

Therefore, Lenght of the rectangle = 7.5 cm.