Answer:
Volume: 366.6
Surface Area: 314.2
Explanation (look at below)
Explanation:
Volume: 
The radius of this sphere is 5 (half of 10). The equation will be 
5^3
When you calculate that, it will become: 366.6<-- rounded to the nearest tenth. 
Surface Area: 
4
5^2
=100Π
=314.2<-- rounded to the nearest tenth.