Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 1 - Section 1.2 - Formulas and Percent - 1.2 Exercises: 46

Answer

$(a)~d=5$ in $(b)~C=5\pi$ in

Work Step by Step

(a) We know that the diameter relates to the radius by the formula: $diameter=2*radius$ $d=2r$ We plug in $r=2.5$ in: $d=2*2.5=5$ in (b) We know that the circumference of a circle is given by the formula: $Circumference=2\pi~radius$ $C=2\pi r$ We plug in $r=2.5$ in: $C=2\pi~2.5$ $C=5\pi$ in
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