A conical pile of sand has a bottom area of 12.56 square meters and a height of 0.9 meters. How many meters can this pile of sand be used to pave a 2 cm thick road on a road 10 meters wide?
一个圆锥形的沙堆，底面积是12.56平方米，高是0.9米，用这堆沙在10米宽的公路上铺2厘米厚的路面，能铺多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">10 * (1/50)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">0.9 / (1/5)</gadget>
<output>4.5</output>

<gadget id="calculator">(1/3) * 12.56 * 4.5</gadget>
<output>18.84</output>

<result>18.84</result>