using System;

public class Program

{

    public static void Main()

    {

           double base_rectanguloAID, altura_rectanguloAID, x;

            double partes = 2577, area = 0;

            double lim_inferior = -45, lim_superior = 45;

            base_rectanguloAID = (lim_superior - lim_inferior) / partes;

            x = lim_inferior;

            while (x < lim_superior)

            {

                altura_rectanguloAID = 27*Math.Cos(x)+ 3;

                area = area + base_rectanguloAID * altura_rectanguloAID;

                x = x + base_rectanguloAID;

            }

            Console.WriteLine("El valor del area es " + area);

            Console.ReadLine();

        }

    }