Question

The length of a rectangle in twice its breadth . If the perimeter is 72 meters , find the length and breadth of the rectangle​.​

Answer 1

Perimeter of recatngle = 2(length+breadth)

Here it is given that length is twice of breadth

Let 'L' be the length and 'b' be the breadth then

It is given that L=2b

And as per given information

2(L+b)=72

We can replace 'L' with '2b' because it's twice of b

Then we will get

2(2b+b)=72

2(3b)=72

6b=72

b=72/6=12

Therefore Length= 2×12=24

Hope its help you...

Answer 2

Answer:

In a rectangle

Given : Perimeter = 72 m

Breadth = x

length= 2x

we know that perimeter of rectangle = 2(L+B)

=> 2(L+B) = 72m

=> ( 2x+x ) = 72/2

=> 3x= 36

=> x= 12m

put the value of x in length & breadth

=> Breadth = x = 12m

=>Length = 2x = 24m