Question

what should be side of square (in cm) if its perimeter is equal to area?

Answer 1

If side is a,

Perimeter  = 4a
Area = a^2

a^2 = 4a

a(a-4) = 0

a = 0 or a = 4

But a≠0 because if its zero, we cant form a square.

So, a = 4