The ratio of the circumference of the base of a cone to a cylinder is 1:2, the height of the cone is 6 times that of the cylinder, and how many times the volume of the cylinder is the cone
一个圆锥与一个圆柱体的底面周长的比是1：2，圆锥的高是圆柱的6倍，圆柱体的体积是圆锥的多少倍
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