// Sarip, Hania G. 

using System;

​

public class Program 

{

    public static void Main()

    {

        int SideA, SideB, Height, Area;

Console.Write("Enter SideA: ");

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

Console.Write("Enter SideB: ");

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

Console.WriteLine("Enter a Number: ");

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

​

Area = (SideA+SideB) * Height/2;

Console.Write("The area of the trapezoid: " + Area);

​

    }

}