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OpenStudy (anonymous):
Suppose the circumference of a circle is 2π What is its radius?
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OpenStudy (igreen):
Formula: \(\sf C = 2 \pi r\) Plug in what we know: \(\sf 2 \pi = 2 \pi r\) Divide 2 pi to both sides, what's 2 pi / 2 pi?
OpenStudy (anonymous):
1 pi ?? @iGreen
OpenStudy (igreen):
Yes, but we no longer have pi.
OpenStudy (igreen):
pi / pi cancels out.l
OpenStudy (igreen):
So we have: \(\sf r = 1\)
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OpenStudy (anonymous):
so its just 1 @iGreen
OpenStudy (igreen):
Yep!
OpenStudy (anonymous):
THX! @iGreen
OpenStudy (igreen):
Np!
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