A conical pile of sand has a base radius of 1 meter and a height of 4.5 meters. This pile of sand is spread on a road with a width of 5 meters and a thickness of 2 centimeters. How many meters can be covered?
一个圆锥形沙堆，底面半径1米，高4.5米，将这堆沙铺在宽5米的公路上，沙厚2厘米，那么能铺多少米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</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>

<result>47.1</result>