Calculating the circumference of a circle is easy, if you know the right formula.
The formula to find the circumference of a circle is:
πd
Where d is the diameter of the circle (twice the length of the radius or 2r)
and π is 3.14
Here is an illustration to help you visualize how to find the circumference of a circle:
How to calculate the circumference of a circle.
So, if the diameter of the circle is 5. We can calculate the circumference of the circle by:
5 x 3.14 = 15.7
If the RADIUS is 8, then we can calculate the circumference by multiplying 2 x 8 x 3.14 = 50.24
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Danielle Bianchi has been helping students master the skills and tricks necessary to score high on their SATs for over 10 years. She works one on one with students in person and via Skype to prepare them for the SAT, ACT, and the entire college admission process.
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