Question

The perimeter of a square is 128 square metre. what is it's area

Answer 1

I think there is a mistake in the question..
How can be the unit of perimeter be in square ...

And if it is wrong then..

Perimeter =128m
Figure is a square.

So side = perimeter /4
=128/4
=32m

And so area = 32×32
= 1024 square meter..

Answer 2

Hi !

Side of the square = a

Perimeter = 4a

4a = 128

a = 128/4
   = 32 m

Area = side × side
         = a²
         = (32)²
         = 1024 m²