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# How do you calculate the circumference of a circle?

I need more than just the formula, I need directions on how to solve the formula.

 +1 vote! +7 you voted Answer by  VB (361) C=(pi)*d d=diameter of the circle(length from one side of the circle to the other going through the center. Take the diameter and multiply by pi(3.14). That is your answer.

 +1 vote! +6 you voted Answer by  esteban (1334) The formula for the circumference of a circle is C = pi*D, where D is the diameter and pi is about 3.14. If the diameter of the circle is 5 inches, for example, just multiply 5 * 3.14 = 15.7. The circumference is 15.7 inches.

 +1 vote! +5 you voted Answer by  peace232 (76) Measure the radius of the circle and multiply this radius by 2 and multiply again by 3.14 which is the value of pi.

 +1 vote! +5 you voted Answer by  amswplusone (652) To get circumference, multiply the diameter (or two times the radius) by pi (3.1415962 only if you need a decimal answer, otherwise leave the answer as "something times pi").