Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_18425346_2 (city_area_km_2__ VARCHAR, district VARCHAR)

### Question ###
What is the area of the city in the Sargodha district?

### Accurate SQL ###

SELECT COUNT(city_area_km_2__) FROM table_18425346_2 WHERE district = "Sargodha district"