Try, while in an active SE document, go to Solid Edge Options > Units tab.....look for the drop down to change the units for Area.
Design Manager Streetscape Limited
Solid Edge ST10 [MP0] Classic [x2 seats]
Thank you for answering.I have ST6 version and there is no "Units" in Solid edge options.
But I did find it after all .It is in Properties-->file properties-->units.