conical compound soil mound covers an area of 62.8 square meters and is 3 meters high. Use this pile of compound soil to lay a roadbed on a road with a length of 31.4 meters and a width of 10 meters. How many centimeters can be laid? ．
一个圆锥形三合土堆，占地面积62.8平方米，高3米，用这堆三合土在一段长31.4米，宽10米的公路上铺路基，能铺多少厘米厚？．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">31.4 * 10</gadget>
<output>314</output>

<gadget id="calculator">3 / 314</gadget>
<output>3/314 = around 0.009554</output>

<gadget id="calculator">(1/3) * 62.8 * (3/314) * 100</gadget>
<output>20</output>

<result>20</result>