P is roughly equal to 314. The circumference of a circle is calculated using the formula. Substitute this value to the formula for circumference.
The diameter of a circle is known as the straight line segment which passes through the center of the circle.
The formula for working out the circumference of a circle is. The circumference of a circle is measured in meters kilometers yards inches etc. We know that the diameter is equalled to 2r 2 times the radius so in other words the formula for a circles circumference is. If a circle has a diameter of 4 its circumference is 31441256 If you know the radius the diameter is twice as large.