# What is the geometric mean between 3 and 18?

What is the geometric mean between 3 and 18?
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Cristian Hamilton
Remember that the geometric mean between two numbers a and b is
$\sqrt{ab}$
So, the geometric mean between 3 and 18 is
$\to \sqrt{3\ast 18}$
$\to \sqrt{54}$
$⇒\approx 7.35$