Question

The length and breadth of a rectangle area in ratio 5:2 and its perimeter is 98km .Find the area of the region bounded by the rectangle

Answer 1

let the common multiple be x
2(l+b)=98
2(5x+2x)=98
2(7x)=98
14x=98
x=7

hence
l=5x
l=35km

b=2x
b=14km

area=l×b
= 35×14
=490km²

hope this helps you. :-)