A conical pile of fine sand has a bottom circumference of 18.84 meters and a height of 0.8 meters. Put all the fine sand in a cylindrical bunker with a radius of 4 meters. What is the thickness of the fine sand in meters?
一个圆锥形的细沙堆，底面周长是18.84米，高是0.8米，把这些细沙全部铺在一个半径为4米的圆柱形沙坑里，细沙的厚度是多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

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

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

<gadget id="calculator">(1/3) * 28.26 * 0.8</gadget>
<output>7.536</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<gadget id="calculator">7.536 / 50.24</gadget>
<output>0.15</output>

<result>0.15</result>