docs: @Unit(NM)
      public static double radius(Location... location)
      {
          Location center = center(location);
          double max = 0;
          for (Location loc : location)
          {
              Distance distance = distance(loc, center);
              double miles = distance.getMiles();
              if (miles > max)
              {
                  max = miles;
              }
          }
          return max;
      }