Blueprint for creating a "volume of revolution" image?

DashingDave shared this question 5 years ago
Needs Answer

I've seen a handful of GeoGebra applets that have been uploaded to the site demonstrating the visuals I'm looking for--but I can't find any help on how to actually create them in my own document. I can't even find a template.

I did find a great template for graphing a surface of revolution from Steve Phelps: but I don't know if/how that can be manipulated to rotate a shaded area between 2 functions (such as the one pictured).

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