A conical sand pile has a base circumference of 12.56 meters and a height of 1.5 meters. Use this pile of sand to pave a road with a thickness of 4 cm on a road with a width of 10 meters. How many meters can you pave?
一个圆锥形的沙堆，底面周长是12.56米，高是1.5米．用这堆沙在10米宽的公路上铺4厘米厚的路面，能铺多少米？
<gadget id="calculator">18.84 / 6.28</gadget>
<output>3</output>

<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">12.56 / 6.28</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">10 * 0.04</gadget>
<output>0.4</output>

<gadget id="calculator">6.28 / 0.4</gadget>
<output>15.7</output>

<result>15.7</result>