Answer:
Step-by-step explanation:

r = 8/2 = 4 inches
Area=πr²

Answer:
6= 15 1/3
Step-by-step explanation:
8 + 6=14
1/2=5/10
3/5=6/10
6/10+5/10=11/10=1 1/2
14+1 1/2= 15 1/2
Answer: The volume changes by 3*3/2*3 or 27/8.
Step-by-step explanation:
The answer is C I believe:)