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_11 (area__km²_ VARCHAR, gdp_per_capita__us$_ VARCHAR)

### Question ###
What is the area of the nation with GDP per capita (US$) of 11,929?

### Accurate SQL ###

SELECT area__km²_ FROM table_name_11 WHERE gdp_per_capita__us$_ = "11,929"