CREATE TABLE table_18425346_2 (city_area_km_2__ VARCHAR, district VARCHAR)

What is the area of the city in the Sargodha district?
SELECT COUNT(city_area_km_2__) FROM table_18425346_2 WHERE district = "Sargodha district"
SELECT COUNT("city_area_km_2__") FROM "table_18425346_2" WHERE "Sargodha district" = "district"