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OpenStudy (anonymous):
2. find the circumference of the given circle . Round to the nearest ten ( 1point ) A. 11.0 cm B. 38.5 cm c. 42.8 cm D. 22.0 cm
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OpenStudy (anonymous):
hartnn (hartnn):
\(Circumference \: C = 2\pi r \) r = radius
OpenStudy (anonymous):
|dw:1392131366238:dw|
hartnn (hartnn):
just put r= 3.5 in C = 2pi*r
OpenStudy (anonymous):
so C is the correct answer ?
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hartnn (hartnn):
nopes, 2*3.14*3.5 is 21.98 = 22 approx
OpenStudy (anonymous):
so D IS CORRECT ANSWER !
hartnn (hartnn):
yes! :)
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