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_20 ( area_in_acres__ha_ VARCHAR, park_name VARCHAR )

### Question ###
What is the area in acres (ha) for the park bald eagle state park?

### Accurate SQL ###

SELECT area_in_acres__ha_ FROM table_name_20 WHERE park_name = "bald eagle state park"