calcCone
Conical Sections
I had use for creating some patterns for cones on paper, and while it seems easy enough to do, there's some pretty complex math to do it precisely.
To make a cone from a flat piece of paper involves a series of equations, involving some circles, and some lines. Sounds easy, right?
The Calculator

CBase: base of cone circumference
CTop: top of cone circumference
LSide: length of side of cone
ROut: radius of outer circle
RIn: radius of inner circle
SOut: outer point-to-point segment
SIn: inner point-to-point segment
Show the Work
The equations and diagrams for how the calculator was implemented.