a. Express the radius of a circle as a function of its circumference. Call this function r(C).

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.7: Inverse Functions
Problem 46SE: The circumference C of a circle is a function of its radius given by C(r)=2r. Express the radius of...
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The circumference C of a circle is a function of its radius given by C(r)=2πr.

 

a. Express the radius of a circle as a function of its circumference. Call this function r(C).

 

Enter the exact answer.

 

Enclose numerators and denominators in parentheses. For example, (a−b)/(1+n).

 

r(C)=

 

     

 

b. Find r(20π) and interpret its meaning.

 

r(20π)=

 

   

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