What is the square root of 15?
1 answer(s)
The square root of 15 is one of those numbers that doesn't have a clean, whole answer. It's an irrational number, which just means the decimal goes on forever without a repeating pattern.
For any practical purpose, like for a math problem, you'll want a rounded decimal. The answer is approximately 3.873.
A good way to check this is to remember that 3x3 is 9 and 4x4 is 16. So, the square root of 15 has to be a number between 3 and 4, but a lot closer to 4.