Answer:
6i) 1584π
ii) 1700cm
Explanation:
Please see the attached pictures for full solution.
Clarification:
In the 2nd image, in the 2nd and 5th line, the volume of 8 spheres and volume of 1 sphere refers to the amount of material used in 8 spheres and 1 sphere respectively.
Since the cylinder is melted and recasted into the spheres, the total volume (amount) of material in the cylinder would be equivalent to the total amount of material in 8 spheres.