does anyone know a quick formula to find a compound arc laid flat? for instance, i have a piece of bending ply that is wrapped on a frame and the frame is angled on one end. i'm trying to find the arc for when the piece is laid flat. i know there's a formula somewhere but my search doesn't come up with anything other than the usual arc formulas and i'm not sure if i'm searching for the right thing. any help is appreciated.

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