Calculate the area, perimeter and diagonal of square.

Action
Enter the side of a square 
Description (-)
A square is a regular polygon with four sides. It has four right angles and parallel sides.

Square Formula:
Area of Square =a*a
Perimeter of Square =4*a
Diagonal of Square = a*sqrt(2)
where a = side
Tips:
You can create program and share, or earn the money from it. If you can't find program using search program, you can post project and descibe request, other users will do for you.