A cylindrical cup with a bottom radius of 12 cm is filled with water, and a conical iron block with a bottom diameter of 12 cm and a height of 18 cm is soaked in the hand. When the iron block is taken out of the cup, the water surface in the cup How many centimeters will it drop? ?
一个底面半径为12厘米的圆柱形杯中装有水，手里浸泡了一个底面直径是12厘米，高是18厘米的圆锥体铁块，当铁块从杯中取出来时，杯中的水面会下降多少厘米？？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

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

<gadget id="calculator">12 ** 2</gadget>
<output>144</output>

<gadget id="calculator">3.14 * 144</gadget>
<output>452.16</output>

<gadget id="calculator">18 / 452.16</gadget>
<output>0.039809</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * 0.039809</gadget>
<output>1.500003</output>

<result>1.500003</result>