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OpenStudy (anonymous):
What is the formula to find the circumference of a circle?
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OpenStudy (anonymous):
\[C=2πr\]
OpenStudy (anonymous):
or C=πd
OpenStudy (anonymous):
@tbeneka , that's not one of my choices :( C=2pi*d C=pi*d C=pi*r
OpenStudy (anonymous):
sorry, just saw that.. thanks! :)
OpenStudy (empty):
If you were curious this formula really comes from the definition of \(\pi\). You see if you take any circle and measure its circumference and measure it's diameter these depend on how big of a circle you pick. However if you divide the circumference by the diameter, you always get a constant value, and that value is \(\pi\)!
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OpenStudy (anonymous):
@Empty Thanks! :D
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