The image shows a mathematical expression involving a square root: $\sqrt{1921}$.

Would you like to calculate the value of $\sqrt{1921}$, or need help understanding how to solve it manually?

Feel free to clarify, and here are some follow-up questions to expand:

1. What is the approximate value of $\sqrt{1921}$?
2. How can we estimate square roots manually?
3. What are square roots, and why are they important in mathematics?
4. Can square roots be simplified if the number under the root is not a perfect square?
5. How can square roots be expressed in terms of decimals?

Tip: When simplifying square roots, check if the number has any perfect square factors to make the process easier.