using System;
public class Program
{
public static void Main(string[] args)
{
double base1 = 4.0;
double base2 = 7.0;
double height = 5.0;
double area = (base1 + base2) / 2.0 * height;
Console.Write("Area of Trapezium = " + area);
}
}
/*
run:
Area of Trapezium = 27.5
*/