Question

The perimeter of a rectangle is 36 cm what is the breadth if the length is twice the breadth ​

Answer 1

Answer:

the breadth = x and the length =2x  

perimeter = 2 (l+b)  

36 = 2 ( x + 2x )  

36/2 = (x+2x)

18 = 3x  

18/3 = x  

6 = x  

The breadth is 6 cm and length will be 12 cm.

Hope it helps

Answer 2

Given : Perimeter of rectangle is 36 cm

To find : Length and breadth

Solution :-

Let breadth be x cm

Said that, length is twice than breadth

∴ Length = 2x

To find the length and breadth, we will use the formula of Perimeter of rectangle

Perimeter of rectangle = 2(length + breadth)

☛ 36 = 2(2x + x)

☛ 36 = 2(3x)

☛ 36 = 6x

Dividing both the sides by 6, we get

☛ x = 6

∴ Breadth = x cm

= $\large{\boxed{\boxed{\rm{6\:cm}}}}$

∴ Length = 2x cm

= 2 × 6

= $\large{\boxed{\boxed{\rm{12\:cm}}}}$