CREATE TABLE table_22330 ("Serial No." FLOAT, "District" TEXT, "Headquartered City" TEXT, "City Population  ( 2009 ) " FLOAT, "City Area ( km 2  ) " FLOAT)

What is the smallest city area?
SELECT MIN("City Area(km 2 )") FROM table_22330
SELECT MIN("City Area(km 2 )") FROM "table_22330"