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_49918 ( "Urban area (locality)" text, "Population" real, "Land area (hectares)" real, "Density (inh./km\u00b2)" real, "Code" real )

### Question ###
What is the average land area with a density of 815.48, and a Population larger than 411?

### Accurate SQL ###

SELECT AVG("Land area (hectares)") FROM table_49918 WHERE "Density (inh./km\u00b2)" = '815.48' AND "Population" > '411'