import java.io.*;
class CircleArea{

public void calculate(int r){
  double area = java.lang.Math.PI*r*r;
        System.out.println("Area of Circle : "+area);
        double  perimeter =2*java.lang.Math.PI*r ;
        System.out.println("Perimeter of Circle : "+perimeter);
}

public void getInput() throws IOException{
int r=0;
        BufferedReader br1 = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter Radius of Circle  : ");
        r = Integer.parseInt(br1.readLine());
	calculate(r);
}

public static void main(String[] args) throws Throwable{
        CircleArea circ = new CircleArea();
	circ.getInput();       
  }
}