//Name: Vaibhav kapoor
//Date: October 2, 2006
//Assignment: Java Introduction Programs
//Purpose: Using Math Methods (PI nd Power)


import java.io.*;

public class circle
{
  public static void main(String[] args) throws IOException
  {
    Console cs = new Console();
    double radius = cs.readDouble();
    double circumference = 2 * Math.PI * radius;
    double area = Math.PI * Math.pow(radius, 2);
    System.out.println("The circumference of the circle is " + circumference);
    System.out.println("The area of the circle is " + area);
  }
}