You should find the attached graphic to be helpful for what you need to know.
Answer: I think the answer might be 225 but I'm not sure I'm 100% percent correct
Step-by-step explanation:
If a variables varies jointly, we can just divide it by the other variables in relation to it.
For example, since p variables jointly as q and square of r, then

where k is a constant
First, let find k. Substitute p= 200
q= 2, and r=3.



Now, since we know our constant, let find p.

Q is 5, and r is 2.



Answer:
12in
Step-by-step explanation:
2r = 24
r = 12