Move the mouse pointer over the edge of the row or column you want to adjust. The pointer becomes a double-sided arrow.
Click and drag the row edge up or down to increase or decrease the row height, or drag the column edge left or right to increase or decrease the column width.
Release the mouse button; the row height or column width is adjusted.
You can easily adjust the height of a table row or the width of a table column to accommodate text or an image in the table cells .
When you click inside a table cell and start typing, PowerPoint automatically adjusts the row height to include all the text.