import java.util.Scanner;
public class Circle {
     public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);  // input from keyboard
        System.out.print("Please enter the radius-->");
        double radius = keyboard.nextDouble();   // radius to work with
        double diameter = radius*2;
        System.out.println("The diameter is " + diameter);
        double circumference = Math.PI*2*radius;
        System.out.println("The circumference is " + circumference);
        double area = Math.PI * Math.pow(radius, 2);
        System.out.println("The area is " + area);
        double volume = (4.0 / 3.0) * Math.PI * Math.pow(radius, 3);
        System.out.println("The volume of a sphere is " + volume);
        double surfaceArea = Math.PI * 4 *  Math.pow(radius, 2);
        System.out.println("The surface area of a sphere is " + surfaceArea);
     }
}