A conical sand pile has a base circumference of 31.4m and a height of 1.5m. Use this pile of sand to pave a road with a length of 125m and a thickness of 10cm. How many meters can be paved?
一个圆锥形的沙堆，底面周长是31.4m，高是1.5m．用这堆沙铺在一个长125m，厚10cm的路面上，可以铺几米长？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

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

<gadget id="calculator">(1/3) * 3.14 * 25 * 1.5</gadget>
<output>39.25</output>

<gadget id="calculator">125 * 0.1</gadget>
<output>12.5</output>

<gadget id="calculator">39.25 / 12.5</gadget>
<output>3.14</output>

<result>3.14</result>