The distance around a circle, equal to 3.1416 times the circle's diameter.<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. | The distance around a circle, equal to 3.1416 times the circle's diameter.<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. |