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Mathematics 11 Online
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

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 ?

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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