Cone whose base has a centre and in which the segment that joins the apex to the centre is perpendicular to the plane containing the base.

### Property

If the base of a right cone is a circle, then the cone is called a **right circular cone**.

If the cone is not a right cone, then it is called an **oblique cone**.

### Examples

- Right circular cone

- Right cone with non-circular base

- Oblique cones

### Formules

- The volume
*V*of a right circular cone of radius \(r\)*,*diameter \(d\), height \(h\)

\(V\space =\space \dfrac{πr^2 h}{3} \space = \space \dfrac{π}{12} d^2 \sqrt{4a^2 − d^2}\) - The lateral area
*A*of a right circular cone of diameter \(d\) and height \(h\) is given by the equation : \(A \space = \space \dfrac{πda}{2} \space = \space \dfrac{πd}{4} \sqrt{4h^2 + d^2}\)