SOLUTION: In the formula V=r^2h, if h is doubled and r triples, then V multiplied by? A)6 B)9 C)12 D)18

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Question 1143389: In the formula V=r^2h, if h is doubled and r triples, then V multiplied by?
A)6
B)9
C)12
D)18
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+V%5B1%5D+=+r%5E2+%2A+h+
and
+V%5B2%5D+=+%283r%29%5E2+%2A+2h+
+V%5B2%5D+=+9r%5E2+%2A+2h+
+V%5B2%5D+=+18%2Ar%5E2+%2A+h+
The answer is D) 18