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 A circle has a radius of 12.6 cm 

 What is the exact length of an arc formed by a central angle measuring 120°? 

 Express your answer using π

 Mar 6, 2018
 #1
avatar+100516 
+3

S  = arc length

 

S  =  2 pi (radius) (120 /360)

 

S  =  2 pi  (12.6) (1/3)

 

S  =  25.2 / 3   * pi  

 

S  =  8.4 pi   cm

 

 

 

cool cool cool

 Mar 6, 2018

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