public static AreaUnit Hectares {get;}

{
  // convert 2 hectares to acres
  double acres = AreaUnit.Hectares.ConvertTo(2, AreaUnit.Acres);
}

{
  // convert 300 hectares to square miles
  double sqMiles = AreaUnit.Hectares.ConvertTo(300, AreaUnit.SquareMiles);
}

{
  double sqMetersPerUnit = AreaUnit.Acres.SquareMetersPerUnit;
  sqMetersPerUnit = AreaUnit.Ares.SquareMetersPerUnit;
  sqMetersPerUnit = AreaUnit.Hectares.SquareMetersPerUnit;
  sqMetersPerUnit = AreaUnit.SquareKilometers.SquareMetersPerUnit;
  sqMetersPerUnit = AreaUnit.SquareMiles.SquareMetersPerUnit;
  sqMetersPerUnit = AreaUnit.SquareYards.SquareMetersPerUnit;
}