Area of Figures

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace areaOfFigures
{
    class Program
    {
        static void Main(string[] args)
        {
            string typeOfFigure = Console.ReadLine();
            double area = 0.0;
            switch (typeOfFigure)
            {
                case "Square":
                    {
                        double a = Double.Parse(Console.ReadLine());
                        area = a * a;
                        break;
                    }
                case "Rectangle":
                    {
                        double a = Double.Parse(Console.ReadLine());
                        double b = Double.Parse(Console.ReadLine());
                        area = a * b;
                        break;
                    }
                case "Circle":
                    {
                        double radius = Double.Parse(Console.ReadLine());
                        area = Math.PI * radius * radius;
                        break;
                    }
                case "Triangle":
                    {
                        double sideLenght = Double.Parse(Console.ReadLine());
                        double hight = Double.Parse(Console.ReadLine());
                        area = (sideLenght * hight) / 2;
                        break;
                    }
            }
            Console.WriteLine($"{area:f3}");
        }

    }
}