Put a conical hammer with a bottom diameter of 12 cm and a height of 10 cm into a cylindrical container (with some water in the container) with an inner bottom diameter of 20 cm (the bottom surface of the hammer is attached to the bottom surface of the container). When the water level is just as high as the hammer and no water overflows, how many centimeters will the water level drop if the hammer is taken out?
向一个内底面直径为20厘米的圆柱形容器(容器中有一些水)里放入一个底面直径为12厘米，高为10厘米的圆锥形铁锤(铁锤底面与容器底面结贴)，这时水面刚好与铁锤同样高且没有水溢出，如果取出铁锤，水面会下降多少厘米？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

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

<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">3.14 * 36 * (10/3)</gadget>
<output>376.8</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<gadget id="calculator">376.8 / 314</gadget>
<output>1.2</output>

<result>1.2</result>