Question

The length and breadth of a rectangular park are in ratio 9 : 5. If its perimeter is 280m, find its area.

Answer 1

let x be the multiple of the ratio to determine the lenght and breadth.
then length =9x, breadth = 5x,
permiter=2(L+B). by substitute and solving further.we get L and B.
after which we can find area of rectangular park.

Answer 2

let, length=9x and breadth=5x perimeter=2(l+b). 2(9x+5x)=280=2*14x=280. 28x=280. x= 280\28=10. area = l*b = 90*50= 450m