Find the geometric mean of 15 and 18. (Round to the nearest tenth). Type the number ONLY

Answer 1

To find the geometric mean of two numbers \( a \) and \( b \), you can use the formula:

\[ \sqrt{a \times b} \]

In this case, the numbers are 15 and 18.

First, calculate their product:

\[ 15 \times 18 = 270 \]

Next, find the square root of their product:

\[ \sqrt{270} \approx 16.4317 \]

Rounded to the nearest tenth, the geometric mean is:

\[ 16.4 \]

So the number is:

\[ \boxed{16.4} \]