/*
 * Main.java
 *
 * Created on July 9, 2007, 12:25 PM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package javaapplication1;
import java.io.*;

/**
 *
 * @author smting
 */
public class Main {
    
    /** Creates a new instance of Main */
    public Main() {
    }
    
    /**
     * @param args the command line arguments
     */
   public static void main(String[] args)
  {
	  //declare the variables
	  double radius;
	  double area;
	  BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	  String str = "";

	  // Prompt the user to enter radius
	  System.out.println("Enter radius: ");

	  // Get the string from the keyboard
	  try {
		  str = br.readLine();
	  }
	  catch (IOException ex)
	  {
		  System.out.println(ex);
	  }

	  //assign value to variable
	  radius = Double.parseDouble(str);

          //radius = 4;
	  // Compute area
	  area = radius * radius * 3.14159;

	  // Display results
	  System.out.println("The area for the circle of radius " + radius + " is " + area);
  }
    
}