AreaOfTrapezoid

using System;

    //Write an expression that calculates the area of a trapezoid by give sides a, b and height h.

class AreaOfTrapezoid
{
    static void Main()
    {
        Console.Write("a = ");
        int a = int.Parse(Console.ReadLine());
        Console.Write("b = ");
        int b = int.Parse(Console.ReadLine());
        Console.Write("h = ");
        int h = int.Parse(Console.ReadLine());

        double area = (a + b) * h / 2;
        Console.WriteLine();
        Console.WriteLine("Trapeoid Area = {0}", area);
    }
}