Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the average area of the city that has a density less than than 206.2 and an altitude of less than 85?

### Inputs:
table_name: table, columns: ['Rank', 'City', 'Population', 'Area (km 2 )', 'Density (inhabitants/km 2 )', 'Altitude (mslm)']

### Response:
SELECT AVG Area (km 2 ) FROM table WHERE Density (inhabitants/km 2 ) < 206.2 AND Altitude (mslm) < 85