#### Answer

$23.685$

#### Work Step by Step

Step 1: Type $\sqrt {561}$ into the calculator.
Step 2: Solve.
Step 3: According to the calculator, $\sqrt {561}=23.685$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$23.685$

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