Answer: If you use 3.14 for pi you get 2858.09
But if you use the actual pi symbol you get 2144.6
Explanation:
The formula for a sphere is v=4/3r³
Using 3.14: V= 4/3·3.14·8³
V= 4/3·3.14·512
V=2858.09
And using the actual pi symbol using the same steps gets you 2144.6