public class ShapePerimeter4_12 {
	ShapePerimeter4_12()
	{	
		System.out.println("أperimeter");
	}
	//Բܳ
	public double perimeter(double r)
	{					
		return Math.PI*2*r;
	}
	//㳤εܳ
	public double perimeter(double w,double h)
	{		
		return 2*(w+h);
	}	
	//εܳ
	public double perimeter(double a,double b,double c)
	{	
		return a+b+c;
	}	
	public static void main(String[] args)
	{
		ShapePerimeter4_12 sp=new ShapePerimeter4_12();
		System.out.println("ԲܳΪ"+sp.perimeter(10));
		System.out.println("ܳΪ"+sp.perimeter(2, 5));
		System.out.println("ܳΪ"+sp.perimeter(3, 4, 5));
	}
}