A conical sand pile has a bottom area of 78.5 square meters and a height of 1.2 meters. If this pile of sand is paved into a roadbed with a thickness of 0.1 meters and a width of 5 meters, how long can it be paved?
一个圆锥形沙堆，底面积是78.5平方米，高是1.2米．把这堆沙铺成厚0.1米、宽5米的路基，可以铺多长？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">5 * 0.1</gadget>
<output>0.5</output>

<gadget id="calculator">1.2 / 0.5</gadget>
<output>2.4</output>

<gadget id="calculator">(1/3) * 78.5 * 2.4</gadget>
<output>62.8</output>

<result>62.8</result>