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punisher432:
The formula for the circumference of a circle is 4072-01-01-03-00_files/i0150000.jpg. Determine the circumference when the radius r is 10 cm.
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dude:
Just substitute r into the equation given \(C=2\pi r\) \(C=2\pi (10)\)
punisher432:
so 20 cm?
punisher432:
or 20piecm
dude:
20 pi
punisher432:
why is it the pi one if i may ask?
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dude:
\(C=2π(10)\) The original equation has a pi 2*10 is 20 (You have to keep the pi) \(20\pi\) or 62.8315...
punisher432:
oh gotcha thank you bud
dude:
np lol
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