Switch Case CSharp

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

namespace _7._5_Square_of_a_FigureType
{
    class Program
    {
        static void Main(string[] args)
        {
            String FigureType = Console.ReadLine();
            switch (FigureType)
            {
                case "square":
                    {
                        double a = Double.Parse(Console.ReadLine());
                        double area = Math.Pow(a, 2);
                        Console.WriteLine(Math.Round(area, 2));
                        break;
                    }

                case "rectangle":
                    {
                        double a = Double.Parse(Console.ReadLine());
                        double b = Double.Parse(Console.ReadLine());
                        double area = a * b;
                        Console.WriteLine(Math.Round(area, 2));
                        break;
                    }
                case "circle":
                    {
                        double r = Double.Parse(Console.ReadLine());
                        double area = Math.PI * Math.Pow(r, 2);
                        Console.WriteLine(Math.Round(area, 3));
                        break;
                    }
                case "triangle":
                    {
                        double a = Double.Parse(Console.ReadLine());
                        double h = Double.Parse(Console.ReadLine());
                        double area = (a * h) / 2;
                        Console.WriteLine(Math.Round(area, 2));
                        break;
                    }
            }

        }
    }
}