Write a C# Sharp program to calculate the of each city's size in square from the given area of some cities in the United States

using System;
using System.Text;
namespace exercises {
  class Program {
    public static void Main() {
      // Create an array containing the area of some squares.
      Tuple < string, double > [] areas = {
        Tuple.Create("Sitka, Alaska", 2870.3),
        Tuple.Create("New York City", 302.6),
        Tuple.Create("Los Angeles", 468.7),
        Tuple.Create("Detroit", 138.8),
        Tuple.Create("Chicago", 227.1),
        Tuple.Create("San Diego", 325.2)
      };
      Console.WriteLine("{0,-18} {1,14:N1} {2,30}\n", "City", "Area (mi.)",
        "Equivalent to a square with:");
      foreach(var area in areas)
      Console.WriteLine("{0,-18} {1,14:N1} {2,14:N2} miles per side",
        area.Item1, area.Item2, Math.Round(Math.Sqrt(area.Item2), 2));
    }
  }
}