Question

Is it possible to design a rectangular park of perimeter 40m and area 400m2?

Answer 1

I hope that is useful for you

Answer 2

l+b=20

lb=400

(l-b)^2=(l+b)^2-4ab
=20^2-1600
=400-1600
= -1200 which is not possible as squares can’t be negative

So not possible