Answer
$C=\pi d$.
Work Step by Step
The circumference is $=C$.
The diameter is $=d$
Circumference is equal to the product of $\pi$ and the diameter.
$C=\pi d$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.1 Algebra Essentials - A.1 Assess Your Understanding - Page A13: 133
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