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_8 ( area_km_2 VARCHAR, population_in_millions VARCHAR, member_state VARCHAR )

### Question ###
What is the total number of area km2 with a 4.2 population in millions and is a member state of the Czech Republic?

### Accurate SQL ###

SELECT COUNT(area_km_2) FROM table_name_8 WHERE population_in_millions > 4.2 AND member_state = "czech republic"