Enter any [b]UPPER FUNCTION[/b] (labeled upper(x)).[br]Enter any [b]LOWER FUNCTION[/b] (labeled lower(x)).[br]Enter your [b]lower and upper limits of integration[/b] ("a" and "b", respectively).[br][br]Slide the [b]FILLING[/b] slider all the way to the left. [br]For this solid, note how cross sections parallel to the yAxis are [color=#ff7700][b]REGULAR NONAGONS[/b][/color].[br]Each side of this [color=#ff7700][b]regular nonagon [/b][/color]has length upper(x) - lower(x). [br][br]You can move this [color=#ff7700][b]regular nonagon[/b][/color] by sliding the [b]MoveMe[/b] slider. [br][br]You can modify any of these parameters (functions, limits) at any time. [br][br][color=#1e84cc][b]To explore in augmented reality, see the directions below this applet.[/b][/color]

1) Open up GeoGebra 3D app on your device. [br][br]2) Go to the [b]MENU[/b] (horizontal bars) in the upper left corner. Select OPEN. [br] In the Search GeoGebra Resources input box, type [b]ybjuvg8m[/b]. [br] (Note this is the resource ID = last 8 digits of the URL for this resource.)[br][br]3) In the resource that uploads, zoom in/out if needed.[br]  You can alter the functions upper(x), lower(x). [br] You can also move sliders a, b, MoveMe, and Filling.[br] (Be sure to leave everything else alone.)