It takes them 45 minutes if they start at the same time, but adding them together it would be an hour.
I believe that the answer to that one would be A.
Answer:
3053.63
Step-by-step explanation:
Use the equation for sphere volume: 
Plug the values in and get
≈ 3053.63
Note: exact value of pi used.
Answer:

Step-by-step explanation:

The numbers can be 5.25 and 26.25