Answer:
No
Step-by-step explanation:
I am not sure what you mean by "add 0 to pi" as when you add 0 to anything, nothing changes. When you add anything to pi, in fact, you will never get a rational number. Even if you add an irrational number to pi to try and balance it, pi is infinite and will never be rational when something is added to it.
Not sure for the rest but 9 and 11 should switch answers and 10 is square.
Hope this helps
20+12 = 22, 22-8=14, n=14