The image shows the number 8418 with a square root symbol over it, indicating that you need to find the square root of 8418.

To find the square root of 8418, let's approximate the result:

$\sqrt{8418} \approx 91.74$

So, the square root of 8418 is approximately 91.74.

Would you like a step-by-step explanation of how to approach this square root calculation or any further details?

Here are some related questions for further exploration:

1. How can I estimate square roots of large numbers without a calculator?
2. What are some methods for simplifying square root calculations by hand?
3. What is the difference between a perfect square and a non-perfect square?
4. How do I find cube roots or other roots of numbers?
5. What is the significance of irrational numbers in square root calculations?

Tip: For non-perfect squares, you can use approximation techniques or a calculator to get a precise result.