Table schema:
CREATE TABLE table_name_14 (area__km_2__ INTEGER, density__inhabitants_km_2__ VARCHAR, altitude__mslm_ VARCHAR)

Question: What is the average area of the city that has a density less than than 206.2 and an altitude of less than 85?
SQL: SELECT AVG(area__km_2__) FROM table_name_14 WHERE density__inhabitants_km_2__ < 206.2 AND altitude__mslm_ < 85