Question 107665
Since you are given four possible answers, you can do this one in your head.


The radius is 3, so the radius squared is 9.  Multiply that by the height to get 45.  Now all we have to do is multiply by {{{pi}}}.


We know {{{pi}}} is a little more than 3, and 3 times 45 is 135.  So you can throw out answers a) and b) immediately because they are both too small.  We can also throw out answer c) because we know that {{{pi}}} is not exactly 3.  That leaves answer d).