The flat pattern of a cone is an application that calculates the parameters for a development of a right, oblique or truncated cone.
For creating a cone from sheet metal or any flat material.

Added the function of saving a flat pattern of a straight and truncated cone to a DXF file (permission to write the file is required). The file is saved to the Download / DXF / folder.
On your phone, you can open it with AutoCAD, DWG FastView, SchemataCAD viewer DWG / DFX, AutoDWG DWGSee.