what is the formula for the circumfrence of a circle?
C=
C = 2(pi)r
To find the circumference of a circle, you can use the following formula:
C = 2πr
where C represents the circumference, π (pi) is a mathematical constant approximately equal to 3.14159, and r represents the radius of the circle.
To use this formula, you need to know the radius of the circle. The radius is the distance from the center of the circle to any point on its boundary.
Once you have the radius, you can plug it into the formula and calculate the circumference. Multiply 2π by the radius and you will get the circumference of the circle.