What is the length of the side of a square if its area and p

What is the length of the side of a square if its area and perimeter are numerically equal?

Solution

Area of a square = a^2

Perimeter of a squre =4a

Area = perimeter

a^2 = 4a----> a^2 -4a =0

a(a -4) =0

a =0 ; a =4 units

So length of side of a square = 4 units