Truncated cone area

A truncated cone is a shape obtained by cutting a cone with a plane parallel to the base and not containing a vertex. The height of a truncated cone is a straight line segment connecting two bases perpendicularly or the shortest distance between the edges of two bases. Radii are the radii of their bases.

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Total surface area in terms of radii and height

Bottom base radius r1
Top base radius r2
Height l

The lateral surface area of ​​the truncated cone

Bottom base radius r1
Top base radius r2
Generating l