The square root of 256 is:

$\sqrt{256} = 16$

Would you like more details on how square roots work or any other questions?

Here are 5 related questions to explore:

1. What is the square root of 144?
2. How do you calculate the square root of non-perfect squares?
3. What is the square of 16?
4. Can square roots be negative, and why?
5. How do you simplify square roots in algebra?

Tip: Square roots are the inverse of squaring a number! For instance, $16^2 = 256$.