A conical pile of sand has a base circle with a radius of 3 m and a height of 6 m. Using this pile of sand to pave a 4cm thick road on a 5m wide road, how long can it be paved? (π takes 3.14)
一个圆锥形的沙堆，底面圆的半径是3m，高是6米．用这堆沙在5m宽的公路上铺4cm厚的路面，能铺多长？(π取3.14)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">5 * (1/25)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">6 / (1/5)</gadget>
<output>30</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 30</gadget>
<output>282.6</output>

<result>282.6</result>