using System;
class Program
{
static void Main() {
double a = 5; // length of two equal sides
double _base = 8;
double altitude = Math.Sqrt((a * a) - ((_base * _base) / 4));
Console.Write("Altitude (Height) of Isosceles Triangle = " + altitude);
}
}
/*
run:
Altitude (Height) of Isosceles Triangle = 3
*/