This cannot be achieved out of the box. You have to implement it programmatically, for example using a zoom in/ zoom out buttons, you have to dynamically resize both the Cube`s XWidth,YWidth, ZWidth among with it`s side element`s width and height. Feel free to ask if you need more info on this.
the Telerik team
Registration for Q1 2011 What’s New Webinar Week is now open. Mark your calendar for the week starting March 21st and book your seat
for a walk through all the exciting stuff we ship with the new release!