Final answer:
The geometric mean of 15 and 28 is found by multiplying the two numbers and taking the square root of the result, which is approximately 20.49.
Step-by-step explanation:
The geometric mean of two numbers is the square root of the product of the two numbers. It is calculated by multiplying the two numbers together and then taking the square root of the result. So, given the numbers 15 and 28, the calculation for the geometric mean (GM) is:
- First, multiply the two numbers together: 15 × 28 = 420.
- Next, find the square root of the product: √420 ≈ 20.49 (rounded to two decimal places).
Therefore, the geometric mean of 15 and 28 is approximately 20.49.