Question

Will give brainliest :)))

Answer 1

First you have to solve for side TU, which is $\sqrt{ 6^{2} - 3^{2} }$. That equals 3$\sqrt{3}$.

Then you use that to solve for y. 

$y= \sqrt{(3 \sqrt{3} )^{2} + 9^{2} }$

So y equals $6 \sqrt{3}$

Answer 2

It is number three that is the best i could get