//Program Part 1a
   import java.util.Scanner;
   import java.lang.*;
   import java.io.*;
   import java.text.*;
   import java.lang.Math.*;
   import java.text.DecimalFormat;
   import java.lang.String;

    public class book10
   {
      static DecimalFormat twoDec = new DecimalFormat ("0.00");
      static Scanner scan = new Scanner(System.in);
      static int num;
       public static void main(String[] args)
      {
         System.out.println("****************************************");
         System.out.println("***  The purpose of the  following   ***");
         System.out.println("***  programs are to calculate the   ***");
         System.out.println("***  simple interest, the   volume   ***");
         System.out.println("***  a cube, the area of a cirlce,   ***");
         System.out.println("***  and  the  volume of a cone.     ***");
         System.out.println("****************************************");
         do
         {
            System.out.println("************************");
            System.out.println("*** 1: Display one   ***");
            System.out.println("*** 2: Display two   ***");
            System.out.println("*** 3: Display three ***");
            System.out.println("*** 4: Display four  ***");
            System.out.println("*** 5: Quit          ***");
            System.out.println("************************");
            System.out.println("Please enter 1, 2, 3, 4 or 5 to quit");
            num = scan.nextInt();
            System.out.println();
            switch(num)
            {
               case 1:simple();
                  break;
               case 2: AreaCircle();
                  break;
               case 3: volumecone();
                  break;
					case 4: volunecube();
               case 5:System.out.println(" Have a nice day");
                  break;
               default:System.out.println("Please follow direction");
            }
         }while(num != 4);
      }
       public static void simple()
      {
         System.out.println("****************************");
         System.out.println("*The purpose of this progam*");
         System.out.println("**   is to calculate the  **");
         System.out.println("**    Geometric Series    **");
         System.out.println("****************************");
         System.out.println("**");

         double principal,rate,time,interest;
         principal = 100;
         rate = 0.04;
         time = 3;

         interest = principal * rate * time;

         System.out.println("The answer is ===>>>" +interest);

         System.out.println("******************************************************************************");

      }

       public static void AreaCircle()
      {
         System.out.println(" Area of Circle");
         System.out.println("*********************************************************");
         System.out.println("********************************");
         System.out.println("**The purpose of this program **");
         System.out.println("** is to calculate the area   **");
         System.out.println("**         of a circle        **");
         System.out.println("********************************");
         System.out.println();
         double radius,pi,area;

         radius = 6.2;
         pi = 3.1416;

         area = pi * Math.pow(radius,2.0);

         System.out.println("The answer is==>>"+twoDec.format(area));
         System.out.println("******************************************************************************");


      }
       public static void volumecone()
      {
         System.out.println(" volume of cone");

         System.out.println("********************************");
         System.out.println("**The purpose of this program **");
         System.out.println("** is to calculate the volume **");
         System.out.println("**         of a cone          **");
         System.out.println("********************************");
         System.out.println();
         double radis,b,pie,volume;

         radis = 9.1;
         b = 4.932747;
         pie = 3.1416;

         volume = .33 * pie * Math.pow(radis,2.0)* b;

         System.out.println("The answer is==>>"+twoDec.format(volume));
         System.out.println("*********************************************************");

         System.out.println();

      }

       public static void volunecube()
      {
      System.out.println("*********************************************************");


      System.out.println("********************************");
      System.out.println("**The purpose of this program **");
      System.out.println("** is to calculate the volume **");
      System.out.println("**         of a cube          **");
      System.out.println("********************************");
      System.out.println();
      double volune,cube;

      cube = 3.167219;

      volune = Math.pow(cube,3.0);

      System.out.println("The answer is==>>"+twoDec.format(volune));



      }


   }