Answer: Last option.
Step-by-step explanation:
Given the expression:

The Quotient of powers property states that:
And the Power of a powet property states that:
Then, applying these properties, you get:

Now you must remember that:
Therefore, simpliying the expression, you get:

5.6 divided by 8 = 0.7
I hope you like this answer and have a good night and life! :D
(4/3) Pi r^3 = (1/3) Pi r^2 h
Solving for h = 4r