Как по Английски будет длина окружности

noun

A roughly circular line, route, or movement that starts and finishes at the same place.

Примеры использования:

I ran a circuit of the village

verb

Move all the way around (a place or thing).

Примеры использования:

The trains will follow the northern line, circuiting the capital

noun

The enclosing boundary of a curved geometric figure, especially a circle.

Примеры использования:

His last work was on the cycloid, the curve traced by a point on the circumference of a rolling cir…