Question

The length of the rectangle is twice of it s breath the perimeter is 90 m find the length and breadth of the rectangle

Answer 1

Answer:

let the length of the rectangle be l,

breadth of the rectangle be b.

l=2b

perimeter=2(l+b)

90=2(l+b)

l+b= 45

2b+b=45

3b=45

b=15

so, l+15=45

l=30

I hope it helps you mate!!!!!

Answer 2

Answer:

let the breadth of the rectangle be x

its length will be 2x

perimeter of a rectangle = 2 (l+b)

=> 90 m = 2 (2x+x)

=> 90/2 m = 3x

=>45 m =3x

=>x = 45/3

=> x= 15

breadth of the rectangle = x = 15 m

length of the rectangle = 2x = 2×15 =30 m

I think you have got your answer