A conical sand pile has a base circumference of 31.4m and a height of 6m. Spread this pile of sand on a road with a width of 10m and a road with a thickness of 5cm. How long can it be paved?
一个圆锥形的沙堆，底面周长是31.4m，高是6m．将这堆沙铺在10m宽的公路上，铺5cm厚的路面，能铺多长？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">31.4 / 6.28</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">10 * (1/20)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">6 / (1/2)</gadget>
<output>12</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * 12</gadget>
<output>314</output>

<result>314</result>