the length of the rectangular field is thrice of its width if the perimeter of this field is 1.6 kilometres find its area in metre square

Answer 1

width --- x
length ---- 3x

2(x+3x) = 1.6 km
8x = 1600 m
x = 200
then 3x = 600

The field is 200 m by 600 m for an area of
120,000 m^2