Office2 lets you change the width of a column or the height of a row from directly within the worksheet view. To change the width of a column, tap and hold on the relevant separator line in the column header. Two arrows will then appear. As soon as they do, with your finger still held down, drag your finger left or right to change the width of the column accordingly.
The same process may be used to change the height of a row. Tap and hold on the relevant separator line in the row header and drag to change the height.