CREATE TABLE table_19085 ("Code" FLOAT, "County" TEXT, "Former Province" TEXT, "Area  ( km 2  ) " TEXT, "Population Census 2009" FLOAT, "Capital" TEXT)

what's the former province with area (km 2 ) being 12,245.9
SELECT "Former Province" FROM table_19085 WHERE "Area (km 2 )" = '12,245.9'
SELECT "Former Province" FROM "table_19085" WHERE "Area (km 2 )" = '12,245.9'