Quandaries and Queries
  

 

what is the radius of a circle with the circumference of 12 inches?
 

 

Hi,

The circumference of a circle is given by

circumference = 2 pi radius

Hence if the circumference is 12 inches then

12 = 2 pi radius

Divide both sides by 2 pi to get

radius = 12/2 pi = 6/pi

Penny

  
 

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