A conical sand pile has a base area of 20 square meters and a height of 1.5 meters. Use this pile of sand to pave a road with a width of 10 meters to a thickness of 2 cm. How many meters can be paved?
一个圆锥形沙堆，底面积20平方米，高是1.5米．用这堆沙在10米宽的公路上铺2厘米厚，能铺路面多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">10 * (1/50)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1.5 / (1/5)</gadget>
<output>7.5</output>

<gadget id="calculator">(1/3) * 20 * 7.5</gadget>
<output>50</output>

<result>50</result>