A cylindrical container with a bottom diameter of 20 cm filled with a part of water. A conical plumb weight with a bottom diameter of 12 cm and a height of 10 cm is placed in the water. When the plumb weight is taken out of the water, the water level in the container drops a few centimeters. ?
一个底面直径为20厘米的装有一部分水的圆柱形容器，水中放着一个底面直径12厘米、高10厘米的圆锥体铅锤，当铅锤从水中取出后，容器中水面高度下降了几厘米？
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