Question

The length and breadth of a rectangular field are in the ratio 7 :4 . If it's perimeter is 440 m , find its length and breadth also ,find the cost of fencing it @ $ 150 per m

Answer 1

Step-by-step explanation:

let the length and breadth be 7x and 4x

= 2×(7+4)x

= 2× 11x

=22x

Perimeter= 440m

x= 440÷22

= 20m

therefore, length= 20× 7 equals 140

and breadth is equal to 80

cost of fencing is=

440×20

= 8800

hope it helps...