abv

package com.company;

import java.io.PrintStream;
import java.util.Scanner;

public class circleAreaAndPerimeter {
    public static void main(String[]args){
        Scanner scanner= new Scanner(System.in);

        double r = Double.parseDouble(scanner.nextLine());

        double area = Math.PI*r*r;
        double perimeter = 2*Math.PI*r;

        //System.out.printf("%.2f%n",area);
        //System.out.printf("%.2f",perimeter);

        System.out.printf("%.2f%n", "%.2f", area,perimeter);


    }
}