Question #0f210

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Question #0f210

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Answer 1 · 2017-06-23T16:33:10

#"1 cm"#

Explanation:

We know

#"circumference" = 2* pi* "radius"#

OR

#2*pi=2*pi*"radius"#

OR

#"radius" = (2*pi)/(2*pi)#

OR

#"radius = 1 cm"#

Answer 2 · 2017-06-23T16:35:35

#"radius "=1#

Explanation:

#"the circumference (C ) of a circle "=2pir#
#"where r is the radius"#

#rArrC=2pir=2pi#

#"divide both sides by "2pi#

#(cancel(2pi) r)/(cancel(2pi))=cancel(2pi)^1/cancel(2pi)^1#

#rArrr=1#

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Question #0f210

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