All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise. Cite this article:

Radius Facts for Kids. *Kiddle Encyclopedia.*

In geometry, the **radius** of a circle or sphere is the shortest connection between the center and the boundary. It is half of the diameter.

r= d รท 2

d= 2 x r = d= r + r

r= Radius d= Diameter

The relationship between the radius and the circumference of a circle is

The area of a circle of radius is

All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise. Cite this article:

Radius Facts for Kids. - This page was last modified on 1 July 2019, at 18:31.