Hello Asim
Please refer to the Analysis OLAP user guide (http://help.sap.com/businessobject/product_guides/sbo41/en/sbo41sp1_aolap_user_en.pdf) Chapter 18 "Printing & PDF Files".
To answer your specific question "Sheet" printing does a "fit to page". There is also a "fit to page width" option.
Regards
Ian