I am populating a list using

List<Country> countries = new List<Country> 
{ 
   new Country() 
   {
     CountryID = "US",
     City = new List<City> {
       new City()
       {
         CountryID = "US", CityName="dfdsf", sqkm = 2803
       } 
   }
 };

and so on

How to access sqkm in the following query?

var countryQuery = countries
    .Select(c => new { Id = c.CountryId, Area = c.City.sqkm???});

c.city.sqkm gives compilation error...how to modify query