Answer:
H. 3 units
Step-by-step explanation:
In order to answer this question, we have to apply the formula for the sphere volume. The formula is:

Plugging the given number into V, we calculate that:

If π=3.14, the radius is:
r ≈ 3 units.
468 plus 624 times 7 divided by 4 and you should get the amount of water in the two tanks
10/12 in simplest form is 5/6.
Equivalent ratios would be 15/18, 20/24, and 25/30.
The rest is easy, give it a try.