In a cylindrical container with a bottom diameter of 12 cm, put a conical iron block with a bottom radius of 3 cm, and completely submerge it in water. At this time, the water level rises by 0.3 cm, but it does not overflow. What is the height of the conical iron block?
在一个底面直径为12厘米的圆柱形容器里，放入一个底面半径为3厘米的圆锥形铁块，全部浸没在水中，这时水面上升0.3厘米，但未溢出．圆锥形铁块的高是多少厘米？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">3.14 * 36 * 0.3</gadget>
<output>33.912</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">3 / 28.26</gadget>
<output>0.106157</output>

<gadget id="calculator">33.912 * 0.106157</gadget>
<output>3.599996</output>

<result>3.599996</result>