To resize the borders using your mouse:
1.If the diagram is in a document or a worksheet, double-click on the diagram to open it.
2.Click on a point on the plane of the diagram where there are no grid lines or curves.
3.Handles appear at the four borders of the diagram's plane. You can use these handles to resize the diagram's frame by dragging the borders with the mouse. You can resize the entire diagram by dragging the hatched frame surrounding it, provided the Fit To Window option in the View menu is switched off.
To resize the borders and diagram plane, do the following:
1.If the diagram is in a document or a worksheet, double-click on the diagram to open it.
2.Double-click on a part of the diagram's plane where there are no grid lines or curves.
3.Click on the Size tab.
4.Enter the desired measurements.