Answer:
-84-12i
Step-by-step explanation:
The one you have is the answer :)
36(3.14) = 4/3 x 3.14 x r^3
113.04 = 4.187(r^3)
113.04/4.187 = r^3
26.997 = r^3
3√26.997 = r
r = ~3
Check: 3^3(

)(4/3) = 27(3.14)(4/3) = 113.04
The correct answer is: A, I, II, III, and IV.
Hope this helps...
30 gallons per hour converts to 120 quarts per hour