cone-shaped pile of sand has a diameter of 10 meters at the bottom and a height of 9 meters. If this pile of sand is used to spread 5 centimeters thick on a road with a width of 10 meters, how many meters can it be paved with?
一个圆锥形沙堆，它的底面直径10米，高9米，用这堆沙子在10米宽的公路上铺5厘米厚，能铺多少米长？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

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

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">9 / 10 / (1/20) / 10</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * (9/5)</gadget>
<output>47.1</output>

<result>47.1</result>