Answer:
The value of x is 9.
The value of y is 18.
Step-by-step explanation:
The given triangle is a right angled triangle.
We have: 
Therefore, 
Since, 
Therefore, we have:


Now, 'y' is the hypotenuse.
Use Pythagoras theorem, we have 
Substituting x = 9, we get:
81 + 81(3) = y²



Hence, the value of y = 18.