# Radius

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**Radius** (plural: **radii**)

## Circle

The radius of a circle is the distance between its center and a point in it, which is half its diameter. For a circle defined as , is its radius.

this wiki

**Radius** (plural: **radii**)

The radius of a circle is the distance between its center and a point in it, which is half its diameter. For a circle defined as , is its radius.

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