# What is the geometric mean of 81 and 4?

##### 3 Answers

Feb 20, 2018

Feb 20, 2018

#### Explanation:

Geometric mean of a and b = Square root of (a x b)

Feb 20, 2018

see a solution process below;

#### Explanation:

We can say let those two digits be represented by

Hence;

Geometric Mean

Recall;

Geometric Mean

Substituting the values..

Hence the Geometric Mean of 81 and 14 is 18.

Hope this helps!