I want to export a 3Dplot but when I export the image remains quiet. I want to the image can rotate and make zoom and paste in to a Powerpoint, for the presentation I can explain to the public the graphics dynamically. I want to know how I can keep the zoom and rotation properties of all 3Dplots.
To retain a 3D description of your graphics, you need to export to a 3D format. Mathematica has many built in exporters for 3D formats.
The bigger problem is how to get PowerPoint to display and interact with the 3D object - it has no built-in capabilities to do so. The usual advice is to embed a CDF into a web page and display the web page in your slide using a browser control or plugin. See this question for example.
Alternatively you could look for a plugin that will display 3D files directly (without CDF player). For example a google search for "X3D powerpoint plugin" returns some potentially useful results. I haven't tried this approach though. Do please post an answer here if you find something that works well.
The nice thing about using CDF player is that you can retain all the interactive elements of your output, not just zooming and rotation but also controls, animation and so on.