Homework (Krug)

import java.util.Scanner;

public class Krug1 {

    public static void main(String[] args) {

        Scanner scan = new Scanner (System.in);
        double R = scan.nextDouble();
        double C = 2 * 3.14 * R;
        double S = 3.14 * R * R;
        System.out.println("R:" + R);
        System.out.println("C:" + C);
        System.out.println("S:" + S);

    }

}