public class Square
{
	private double a;
	
	Square(double side)
	{
		a=side;
	}
	
	public double getSide()
	{
		return a;
	}
	
	public double calculatePerimeter()
	{
		double p;
		p=4*a;
		return p;
	}
	
	public double calculateArea()
	{
		return a*a;
	}
	
	public String toSting()
	{
		String info;
		double area= calculateArea();
		info= "Side=" + a + " Area= " + area;
		return info;
	}
}