How do i solve this?

y = 6

Step-by-step explanation:

You solve by using the pythagorean theorem, which is:

Where a and b are legs of the triangle, and c is the hypotenuse, or y in this case. So let's rearrange this equation for c:

Now, we can substitute in the known values and solve:

Therefore, the value of y is 6

Hope this helps!