Default paper size in the United
States is typically 8.5 by 11 inches. However, in most foreign countries
documents are formatted on metric-sized paper. The most common of these is
called A4 paper, and it measures 210 by 297 millimeters (approximately 8.25 by
11.75 inches).
To change the paper size of a document:
1. From the Page Layout tab, in the Page
Setup group, click the Size
button.
2. From the expanded list, click the
desired paper size.
3. If the size you need is not
listed, click the More Paper Sizes
button at the bottom of the pane to display more sizes.