What is circumference of 15 inch diameter?

1 Answer
Mar 21, 2018

47.147.1 "in"in

Explanation:

The formula for finding the circumference of a circle is:

2pir2πr or, since they gave you the diameter of your circle, we can simplify it to: pidπd

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Plugging values into the equation, we get:
*(Remember: pi is approximately 3.14)

pid rarr pi(15) rarr 3.14(15)πdπ(15)3.14(15)

Now multiply:
3.14(15) = 47.13.14(15)=47.1 "in"in