SIZE of CSE area for dasd models bigger 3390-9

[Fox Blue]

Dear all, 

I am not sure how big the CSE Area need to be on DASD bigger than 3390-9.

The planing manual shows only 3390-9, which has in fact 9 cylinders. 

How big the CSA Area need to be on 3390-27 and 3390-54? 

Thank you very much. 

Best regards,
Fox