The following circumference calculator is easy to use.
Just enter the value of the radius and hit calculate button.
Recall that the formula to get the circumference of a circle
is 2 ×pi×r with pi = 3.141592653589793
Therefore, the circumference depends only on the size of r. That is why you only need to enter r here to get the circumference
The calculator will only accept positive value for r since a distance cannot be negative
As a reminder, if r = 4 cm for instance,
circumference = 2 ×3.14 ×4 = 25.12 cm
Buy a comprehensive geometric formulas ebook. All geometric formulas are explained with well selected word problems.
Mar 19, 18 05:53 PM
Triangle midsegment theorem proof using coordinate geometry and algebra
New math lessons
Your email is safe with us. We will only use it to inform you about new math lessons.