panel C#

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace WindowsFormsApplication1

{

    class Segitiga : Bidang

    {

        public override double luas(int a, int b)

        {

            double c = (a * b)/2;

            return (c);

        }

        public override double Keliling(int a, int b)

        {

            double d = Math.Pow(a, 2);

            double e = Math.Pow(b, 2);

            double c = Math.Sqrt(d + e);

            c = a + b + c;

            return (c);

        }

    }

}