A hemispherical container with a radius of 3 cm is filled with water, and poured into a conical container with a bottom radius of 3 cm, just enough to fill the conical container. Find the height of the conical container.
将一个半径是3厘米的半球形容器装满水，倒入一个底面半径也是3厘米的圆锥形容器中，刚好装满圆锥形容器，求这个圆锥形容器的高．
<result>6</result>