Question

Hello everyone, I need some help on a geometry problem. Thanks for any help!

Answer 1

I would say it’s the third option!

Answer 2

8√2.

Explanation:

Using the Pythagoras theorem:

16^2 = x^2 + x^2

x^2 = 16^2/2

x^2 = 128

x = √128 = 8√2.