Question

The sides of a rectangular field are in the ratio 9:7 and it's perimeter is 144 metres. Find the sides.

Answer 1

let the sides be 9x and 7x
2( l+b) = perimeter
2 ( 9x + 7x ) = 144
2 * 16x = 144
32x = 144
x = 144/ 32
= 4.5
first side= 9x = 9* 4.5 = 40.5 m
second side= 7x = 7* 4.5 = 31.5