using System;

public class Program

{

    public static void Main()

    {

            Console.WriteLine("Jesus Cruz 2°C Programa 7");

        Console.WriteLine();

        Console.WriteLine("Ingrese el dato ");

        var num1 = int.Parse(Console.ReadLine());

        Console.WriteLine("Ingrese el dato ");

        var num2 = int.Parse(Console.ReadLine());

        //int num3=num1*num2/2;

        float pi = 3.1416f;

        Console.WriteLine("El area del cuadrado: {0}*{0}={1}",num1,num1*num1);

        Console.WriteLine("El area del Rectangulo: {0}*{1}={2}",num1,num2,num1*num2);

        Console.WriteLine("El area del Triangulo es: {0}*{1}/2={2}",num1,num2,num1*num2/2);

        Console.WriteLine("El area del circulo es : {0}*{0}*{1}={2}",num1,pi,(num1*num1)*pi);

    }

}