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anonymous

  • one year ago

What is the formula to find the circumference of a circle?

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  1. anonymous
    • one year ago
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    \[C=2πr\]

  2. anonymous
    • one year ago
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    or C=πd

  3. anonymous
    • one year ago
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    @tbeneka , that's not one of my choices :( C=2pi*d C=pi*d C=pi*r

  4. anonymous
    • one year ago
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    sorry, just saw that.. thanks! :)

  5. Empty
    • one year ago
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    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 \(\pi\)!

  6. anonymous
    • one year ago
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    @Empty Thanks! :D

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