The trunk of a truck is 3 meters long, 2 meters wide, and 1 meter high. First, unload all the sand from a truck and pile it into an approximate cone with a bottom area of 12 square meters. How many meters high can it be piled up?
一辆卡车的车箱从里面量长3米，宽2米，高1米．先把一车箱沙子全部卸下堆成一个底面积为12平方米的近似圆锥，可以堆几米高？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / (1/3) / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 * 2 * (1/4)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>