You would use, Order of Operations, A.K.A PEMDAS.
Parenthesis, Exponets, Multiplication, Division, Addition, Subtraction
Follow that order and you do the work yourself, you would never learn by asking other's for the answer. >:)
From: Dark Angel
I think its B
Correct me if this is wrong
The volume of a cylinder is pir^2h. So the answer is pi*4^2 times 4. 64 pi.