Answer:
B
Step-by-step explanation:
radius: diameter/2 = 3 /2 = 1.5 in
new height = 3.5 - 0.5 = 3 in
V = radius^2 x 3.14 x height = 1.5^2 x 3.14 x 3 = 21.2 in^3
The answer is C
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First you had to remove parenthesis first.

Multiply by the numbers.

Final answer 



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-Charlie
3x-12>15
3x>15+12
3x÷3>27÷3
x>9