Dec 3, 2017 · Explanation: The ratio between the circumference of a circle and its diameter is #pi#. We commonly write #c = 2pir#, using the radius instead and doubling it. About 1500 years ago, a.
Radius of the circle = r = 7, as distance of P from origin is 7. "Circumference of the wheel " C = 2pi r = 44' Merry-go-round takes 30 sec to cover one rotation or 44'.
See a solution process below: The formula for the circumference of a circle is: C = 2pir Where: C is the circumference of the circle r is the radius of the circle However, we also know; 2r = d Where: r is the.
