Question

the length of a rectangle is 2 times its breadth. if the perimeter is 120 cm, find the length and breadth

Answer 1

here's your answer length =40

Breadth =20

Answer 2

Let, Beadth be x
Lenght be 2x
Perimeter = 2(l+b)
120=2(2x+x)
120=2×2x
120=6x
6x=120
x=120÷6
x=20

Beadth=x=20 cm.
Length=2x=2×20 =40cm.

Hope it helps!