What is the approximate volume of a half sphere with a diameter of 22cm? A. 2,786 cm3
B. 5,572 cm3
C. 134 cm
D.268 cm3

I'm going to assume that you know what an integer is, and that 1 is an integer. I'm also going to assume you've learned what a mixed number is. If not, a mixed number is a decimal changed into a fraction. So rather than write "1.5" as an answer, you can leave it as a fraction and get 1 1/2.

The same thing can be done to any type of rational fraction. 1.1, 1.2, 1.3, etc. If you choose to use any of those, the numerator will be the number you choose to do (1,2,3, etc) over 10. 

I hope I was able to help. Best of luck!