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What Is The Radius Of A Circle Whose Circumference Is 16π?

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2 Answers

Oddman Profile
Oddman answered
The diameter is (16π)/π = 16, so the radius is 8.
Kashif Naseem Profile
Kashif Naseem answered
Radius= π r2  
Circumference= 2π r

Diameter= 2(π r2 )  
Diameter= 2π r2   
Diameter= 2π r r   -  (1)
since circumference = 2π r which is = 16 π   
so eq. (1) implies that   Diameter= (Circumference) r
Diameter = 16 π r   -   (2)
Since 2(Radius) = Diameter

so eq. (2) implies that
2(Radius) = 16 π r
Radius = 16/2 π r

Therefore Radius = 8 π r

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