Answer:
The Answer is 15
Step-by-step explanation:
For Plato users!
D. 15
I just took the test lol
couldnt tell ya
not enough info
its is 2.5
3√15
x=y
x^2+x^2 = 9*30
2x^2 = 270
x^2 = 9*15
x = y = 3√15