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_338 ( "Dep." text, "Chief town" text, "Arrondissement" text, "Population (1999)" text, "Area (Square km)" real, "Pop density" real, "Cantons" real, "Communes" real )

### Question ###
What is the area (square km) where the arrondissement is millau?

### Accurate SQL ###

SELECT MIN("Area (Square km)") FROM table_338 WHERE "Arrondissement" = 'Millau'