Answer
$\sqrt {54} = 3\sqrt {6}$
Work Step by Step
$= \sqrt {54}$
by GDC / calculator
$= 7.34846...$
$\approx 7.35$
$= 3\sqrt 6$
by GDC / calculator
$= 7.34846...$
$\approx 7. 35$
Therefore, $\sqrt {54} = 3\sqrt {6}$
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