v=4/3 πr^3.
Use this formula
9 3/4 is a mixed number, and to find a percent it has to be a percent of what. 9 3/4 as a percent alone is 975% if that's what they want.
To better give a visual, I drew it out instead.
The attachment is the solution.
it is 3,000 times larger! that is the difference.
