Multiply both sides by 3 to get:
3r = sqrt(A)
Square both sides:
9r^2 = A
Answer:
4:9
Step-by-step explanation:
Area is squaring and Volume is cubing
So it'd be 2^2:3^3, or 4:9
I hope this helped and have a good rest of your day!
The answer to this problem is A.

and surely you know how much that is.