In the screencast below, both the cylinder and cone have equal radii and equal heights. [br]The height of each is double the radius. [br]Their circular bases are tangent to each other. [br][br]How can we construct this 3d image in GeoGebra 3D Graphing Calculator on your device? [br]Try to do so, and then project what you create in Augmented Reality. [br][br]If you're up for it, you can find such solids or create them from cardstock and put them to the "AR TEST" as shown in the screencast below. [br][br][b][color=#1e84cc]How well do the virtual images place when superimposed on top of the real world objects? [/color][/b]