Question

help please, if the ratio of the length to the breadth of rectangle 5:3 and its primeter is 144m find length

Answer 1

Let the ratio be 5x and 3x.

Perimeter= 144

2(l + b)=144

2(5x + 3x)=144

8x=72

x=9

length=5 x 9= 45cm

Answer 2

ATQ, the ratio between the length and breadth of the rectangle is 5 : 3

let the length and breadth of the rectangle be 5x and 3x Respectively.

perimeter of the rectangle = 144m

therefore 2 ( l + b ) = 144m

==> 2 ( 5x + 3x ) = 144m

==> 8x = 144/2

==> 8x = 72

==> x = 72/8

==> x = 9

hence, length of the rectangle = 5x = 5 × 9 = 45m

and breadth of the rectangle = 3x = 3 × 9 = 27m

HOPE THIS HELPS..!!