Question

The length of a rectangle is twice it's breadth. the perimeter of the rectangle is 120 cm. find length and breadth of this rectanglr

Answer 1

Length of rectangle is=2( of its bredth)
Perimeter of rectangle = 120
Perimeter of rectanlge = 2(l+b)
= 2(2b + b) = 120
= 2(3b) = 120. = 6b= 120
b = 120/6 = 20. b = 20 so length is = 2b. = 2* 20= 40.

Answer 2

breadth=x(m)
Length=2x
Perimeter=2(,2x+x)
2(2x+x)=120
6x=120
x=20cm
breadth=20cm
Length=2×20=40cm