please help me you guys because i’m sooo confused what is this

The length of AB is 16.40ft.
To solve this problem, we have to use Pythagoras's theorem
This is done when we know the values of two sides that make up the triangle.
Data;
[tex]x^2=y^2+z^2\\x^2=10^2+13^2\\x^2=269\\x=\sqrt{269}\\x = 16.40ft[/tex]
From the calculations above, the length of AB is 16.40ft.
Learn more on Pythagoras's theorem here;
https://brainly.com/question/654982