If the radius of a circle is doubled, by what factor will the area change? 2r

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If the radius of a circle is doubled, by what factor will the area change?

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College Algebra

ISBN: 978-0134697024

12th edition

Authors: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels

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Question Posted: Apr 11, 2019 01:10 PM

The diameter of a circle is twice its radius, as shown in the Exercise 91 illustration. If the radius of a circle is 7/20 of a foot, what is its diameter?
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If the radius of a circle is doubled, by what factor will the area change? 2r

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2r

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Let r radius of circle Then 2r radius o...View the full answer

College Algebra

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