Please answer correctly !!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!

Answer: 8 units (7.81 Units without rounding)
Work: To get this answers, you need to know the Pythagorean Theorem. The Pythagorean Theorem is a² + b² = c² (c² being the length you need to find) After you find the answer, you have to square it, and after squaring it, you get the missing length. So, let's plug in the numbers. 5² + 6² = 61. Now we need to √61. After doing so, you get 7.81024..., and if you round half way, you get 7.81 units. But preferably, I like to round fully, and you get 8 units.
I hope this helps, and Happy Holidays! :)