Question

3) If the length of a rectangle is twice of
its breadth. It's perimeter is 72cm. Find
the length and breadth.​

Answer 1

Explanation:

Let the breadth of rectangle be x

Thus, the length will be 2x.

Given, perimeter =72 meter

Perimeter of rectangle =2( length + breadth )

Therefore, 72=2(x+2x)

⇒6x=72

⇒x=12

Breadth of rectangle is 12 m.

Therefore length will be 2x=2×12=24 m.

Answer 2

Answer:

B= 12 L=24

Explanation:

let length =L

breadth= B

length is twice of breadth

L=2B ....1

perimeter=72

perimeter of rectangle = 2(L+B)

72=2(2B+B) ...from eq 1

72=2(3B)

72 = 6B

B=72/6

B = 12

L = 2B

L = 2×12

L = 24