A conical sand pile has a bottom circumference of 12.56m and a height of 1.2m. This pile of sand is used to spread 2cm thick on a road with a width of 20m. How many meters can it cover?
一个圆锥形沙堆，底面周长12.56m，高1.2m，用这堆沙在20m宽的公路上铺2cm厚，能铺多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">12.56 / 6.28</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">20 * (1/50)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1.2 / (2/5)</gadget>
<output>3</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 3</gadget>
<output>12.56</output>

<result>12.56</result>