#### Answer

$c$=$\sqrt {21}$

#### Work Step by Step

$\int^c_3\frac{1}{6}xdx$
=$\frac{1}{12}c^2-\frac{3}{4}$
solving $\frac{1}{12}c^2-\frac{3}{4}$
=$1$
we find $c$=$\sqrt {21}$

Published by
Pearson

ISBN 10:
0-32187-896-5

ISBN 13:
978-0-32187-896-0

$c$=$\sqrt {21}$

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.