

import java.util.Scanner;

public class Main {
	public static void main(String [] args){
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String [] args){
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	}
} Main public static void main(String [] args){
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	} main {
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double P = Math.PI; P Math.PI Math Math.PI double  radius = sc.nextDouble(); radius sc.nextDouble() sc.nextDouble sc double area = radius * radius * P; area radius * radius * P radius * radius * P radius radius P double circumference = (radius + radius) * P; circumference (radius + radius) * P (radius + radius) radius radius P String strArea = String.format("%.5f", area); strArea String.format("%.5f", area) String.format String "%.5f" area System.out.println(strArea +" "+ circumference) System.out.println System.out System System.out strArea +" "+ circumference strArea +" "+ circumference strArea " " circumference String [] args args public class Main {
	public static void main(String [] args){
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	}
} public class Main {
	public static void main(String [] args){
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	}
} Main


import java.util.Scanner;

public class Main {
	public static void main(String [] args){
		//????????£?????????????????????
		Scanner sc = new Scanner(System.in);
		double P = Math.PI;
		//???????????????
		double  radius = sc.nextDouble();
		//????????¢??? ?????????????? ???????¨???
		double area = radius * radius * P;
		//?????¨????????? ??´??????????¨???
		double circumference = (radius + radius) * P;
		//?°???°???
		String strArea = String.format("%.5f", area);
		//???????????¨???
		System.out.println(strArea +" "+ circumference);
	}
}