- A right circular cone is formed by a circular base and a lateral surface.
- The height of a cone is perpendicular to its base.

- V – volume
- A – surface area
- A
_{b}– base area - A
_{l}– lateral area - r – radius

- d – diameter
- h – height
- s – slant height
- O – centre of the base
- V' – cone vertex

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