In Word Document , you can specify or choose the page size according to your needs before you print the document .
To specify or change the page size
1. Click File Menu – > Print and the click the Letter DropDown
2. This will show the list of available Paper sizes which includes Letter , Tabloid , Legal , Executive , A3 , A4 , B4 , B5 , Envelope #10 , Envelope Monarch etc…
You can find more paper sizes by clicking “More Paper Sizes”
3. Select the Paper size as per your requirement and click Print .