Circumference

/sɜːkˈʌmfɹəns/

/ˌsɝˈkəmfɹəns/

Circumference

the distance around the external boundary of something

synonyms : perimeter

(geometry) the length of the external boundary of a curved shape, especially a circle

the boundary line encompassing an area or object

synonyms : circuit

Examples

1. Circumference is equal to 2 pi r.

2. Circumference is equal to 2 pi r.

3. Circumference is 2 pi times the radius.

4. Circumference is equal to 2 pi times the radius.