This is an app to help visualize volumes of revolution as presented on the AP Calculus courses. [br][br]You can revolve the entire region around a given horizontal line y=k. You can divide the region into n rectangles and revolve a single "index" rectangle or the first "index" rectangles around a horizonal line y=k. [br][br]If you have any questions or suggestions regarind the app, e-mail Marco Rainaldi mrainaldi@smuhsd.org