A conical pile of gravel has a bottom diameter of 4 meters and a height of 1.5 meters. Use this pile of gravel to pave a 2-meter-wide path. The thickness of the gravel is 5 cm. How many meters can the gravel pave?
一个圆锥形的碎石堆，底面直径是4米，高是1.5米．用这堆碎石去铺一条2米宽的小路，碎石的厚度是5厘米，这些碎石能铺路多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.5</gadget>
<output>6.28</output>

<gadget id="calculator">2 * 0.05</gadget>
<output>0.1</output>

<gadget id="calculator">6.28 / 0.1</gadget>
<output>62.8</output>

<result>62.8</result>