C 2 p 275 m C 2 p 275 m. The formula for circumference of a circle is 2pr where r is the radius of the circle and the value of p is approximately 227 or 314. And something interesting for you.
Area of a Circle.
Where r is the radius of the circle. Notice that if the circle is centered at the origin 0 0 then both h and k in the equation above are 0 and the equation reduces to what we got in the previous section. The formula for circumference of a circle is 2pr where r is the radius of the circle and the value of p is approximately 227 or 314. Circle Formulas in Math.