cone-shaped pile of sand has a base radius of 2 meters and a height of 1.2 meters. How many meters can this pile of sand be used to pave a 2-centimeter road on a 10-meter-wide road?
一个圆锥形沙堆，底面半径2米，高1.2米，用这堆沙在10米宽的公路上铺2厘米的路面，能铺多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.2</gadget>
<output>5.024</output>

<gadget id="calculator">10 * 0.02</gadget>
<output>0.2</output>

<gadget id="calculator">5.024 / 0.2</gadget>
<output>25.12</output>

<result>25.12</result>