Question

The perimeter of a rectangular field is `3/5`km. If the length of the field is twice its width; find the area of the rectangle in sq. meters.

Answer 1

Let the width be x and length 2x km.
Hence

`2 ( x + 2x ) = 3/5`

             x = `1/10`km

                = 100 m

Hence the width is 100m and length is 200m
The required area is given by
A = length x width
    = 100 x 200
    = 20,000 sq .m