The ratio of the circumference of the base of a cone to a cylinder is 1:2. The height of a cone is 6 times that of a cylinder. How many times is the volume of a cylinder equal to that of a cone?
一個圆锥与一個圆柱体的底面周長的比是1：2圆锥的高是圓柱的6倍，圓柱體的体积是圓錐的多少倍
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<result>2</result>