Question

The length of a rectangle is 2 times its breadth its perimeter is 60 CM if the breadth of rectangle is x the length of rectangle is?

Answer 1

let l be length and b be breadth

given l=2b

perimeter is 2(l+b)

60=2(2b+b)

from this we get b=10

if b=10 then l=20(l=2b)

This is ur answer

Answer 2

We know that length is equal to 2x and breadth is X.                                                                          Now perimeter of rectangle is 2(l+b).            2(2x+X)=60.                                                     2(3x)=60.    6x=60. X=10.                                 Now length is 2x so 2×10=20 cm