Flattening Cones

Update: I just updated this frustum calculator with javascript versions that will run from the browser. One will calculate the flattened frustum from the radii, the other uses the circumferences of the frustum shape. Have you ever wanted to lay out the frustum of a cone on a flat surface?” “A what?” “A frustum, the part of a cone that is left when you lop off the top.” “Oh, yeah. If I had a nickel… sadly, I’m still poor....
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