# Solids: Sphere

Document Reference: TN201309069 - Rev: 4.12 - Last Update: 26-03-2014 11:50 GMT - Downloaded: 28-May-2020 23:29 GMT

## A sphere is perfectly round, composed with set of points that are all the same distance from the centre of the sphere. A ball is an example of a sphere.

The volume of a sphere is 2/3 that of a circumscribed cylinder (Archimedes).

### Enclosed Volume of a Sphere

#### Formula

 Volume (V) = 4 × π × radius cubed 3
 V = 4 π r3 3

The radius `r` is the radius of the cross section of the sphere.

### Surface Area of a Sphere

A sphere has only one single curved surface area (face). A sphere has no edges.

#### Formula

 Surface Area (A) = 4 × π × radius squared
 A = 4 π r2

This website uses cookies to give you the best experience on our website, to personalise content and to analyse our website traffic. Some cookies may have been set already. To find out more about our use of cookies you can visit our Privacy Statement. By browsing this website, you agree to our use of cookies.

Hide this message