An approximately conical sand pile has a bottom circumference of 6.28 meters and a height of 1.5 meters. How long can it be paved on a road with a width of 5 meters and a thickness of 4 centimeters?
一个近似圆锥形沙堆的底面周长是6.28米，高是1.5米，把它铺在一条宽5米，厚4厘米的公路上，能铺多长？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">(1/3) * 3.14 * 1 * 1.5</gadget>
<output>1.57</output>

<gadget id="calculator">5 * 0.04</gadget>
<output>0.2</output>

<gadget id="calculator">1.57 / 0.2</gadget>
<output>7.85</output>

<result>7.85</result>