For the first one it would be C and the second one would be B
Assuming you made an error typing the question out, and the formula should say 30g, as it's $30 a round:

Answer:
1628.6cubic cm
Step-by-step explanation:
the volume of a cylinder formula:πr^2h
h(height)=3.6
π=3.14
r(radius)=12
so
3.14*12^2*3.6=
1628.6 cubic cm
hope this helps
you can use integration
I could have done It by typing it here is hectic. you can inbox you email so that I send you scanned answer
Answer:
1.5000000000000000000
Step-by-step explanation: