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_name_78 ( area_in_km² INTEGER, original_name VARCHAR, number_of_settlements_and_villages VARCHAR )

### Question ###
There are less than 11 settlements in Kecamatan Bogor Tengah, what is the area in km ?

### Accurate SQL ###

SELECT SUM(area_in_km²) FROM table_name_78 WHERE original_name = "kecamatan bogor tengah" AND number_of_settlements_and_villages < 11