Q 1 CHAPTER 5 ACTIVITY BOOK

Q1) John is a software developer, who works for Mega Technologies. He is currently under the project of geometric calculations. The program that John has to develop should: Calculate the area of circle. Calculate the volume of the cube.



Ans1)
   
      using System;

      using System.Collections.Generic;

      using System.Linq;

      using System.Text;

      using System.Threading.Tasks;

      namespace ConsoleApplication7

      {



      class geo

      {

      int a, r,area,volume;

      public void ca()

     {

     Console.WriteLine("Enter the radius of circle:");

     r = Convert.ToInt32(Console.ReadLine());

     area = 22/7 * r * r;

     Console.WriteLine("the area of circle:" + area);

     }

     public void cv()

     {

     Console.WriteLine("Enter the side of cone:");

     a = Convert.ToInt32(Console.ReadLine());

     volume = a*a*a;

     Console.WriteLine("the volume of cone:" + volume);

     }

     }

     class Program

     {

     static void Main(string[] args)

     {

     int s;

     Console.WriteLine("Enter 1 for area of circle and 2 for Volume of cone:");

     s=Convert.ToInt32(Console.ReadLine());

     geo g = new geo();

     switch (s)

     {

    case 1:

    g.ca();

    break;

    case 2:

    g.cv();

    break;

    default:

    Console.WriteLine("invalid selection");

    break;

    }

   Console.ReadLine();

    }

    }

   }