Answer:
The answer is 8.
Explanation:
Keep in mind that the Pythagorean Theorem is what you need to use to answer this. So, your equation would first start out as:

Then you'll put the numbers into the equation:

Then you simplify:

You'll then want to subtract:

And your answer will be:

People tend to think they're done with the problem and just think that 64 id the answer, however, it's not. You have to find the square root first.


Therefore, your answer will be 8.
Hope this helped.