Express the area A of a circle as a function of its radius, r. Determine the area of a circle whose radius is 4 inches. That is, find A(4).

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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Express the area A of a circle as a function of its radius, r. Determine the area of a circle whose radius is 4 inches. That is, find A(4). 

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