A cone-shaped sand pile has a base circumference of 6.28 meters and a height of 4.5 meters. Use this pile of sand to pave a road with a thickness of 2 cm on a road with a width of 5 meters. How many meters can you pave?
一个圆锥形的沙堆，量得底面周长是6.28米，高4.5米．用这堆沙子在5米宽的公路上铺2厘米厚的路面，能铺多少米？
<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 * 4.5</gadget>
<output>4.71</output>

<gadget id="calculator">5 * 0.02</gadget>
<output>0.1</output>

<gadget id="calculator">4.71 / 0.1</gadget>
<output>47.1</output>

<gadget id="calculator">47.1 / 0.1</gadget>
<output>471</output>

<result>471</result>