Hong Hong is doing an interesting experiment. He puts some water in a cylindrical iron box with a bottom diameter of 24 cm, and a conical plumb weight with a bottom diameter of 18 cm and a height of 10 cm is immersed in the water. Do you know how many centimeters the water level in the water dropped after the hammer was taken out?
红红正在做一个有趣的实验，他在一个底面直径为24厘米的圆柱形铁皮箱中装了一些水，水中浸没着一个底面直径为18厘米，高为10厘米的圆锥形铅锤，当铅锤取出后，你知道水里的水面下降了多少厘米吗？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">9 ** 2</gadget>
<output>81</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

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

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

<gadget id="calculator">10 / 452.16</gadget>
<output>0.022116</output>

<gadget id="calculator">(1/3) * 3.14 * 81 * 0.022116</gadget>
<output>1.874994</output>

<result>1.874994</result>