There are two cylindrical sticks, one is thinner and the other is thicker. It is known that the length of the thinner stick is three times that of the thicker stick. The radius of the base of the thicker stick is that of the thinner stick. 3 times. Which stick has the largest volume? How big is it?
有两根圆柱形的木棒，一根较细，另一根较粗，已知较细木棒的长是较粗木棒长的3倍，较粗木棒的底面半径是较细木棒的3倍．哪根木棒的体积大？大多少？
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