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what is the circumference of a circle with the diameter of 7cm

 Apr 11, 2016
 #1
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C=7πC=22 (aprox.)

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 Apr 11, 2016
 #2
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circumference of a circle = 2ϖr

 

2*pi*3.5 = 21.9911485751285527

 

2pi3.5

 

But if your teacher says you have to take pi=3 then answer will be 21, not 21.9911485

 Apr 11, 2016

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