If a 2-meter-long cylinder of wood is cut into 3 sections, the surface area increases by 12 square decimeters, which is equivalent to the volume of the wood in cubic meters.
把一根2米长的圆柱体木料截成3段，表面积增加了12平方分米，这跟木料的体积是多少立方米．
<gadget id="calculator">12 / 4 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">(3/100) * 2</gadget>
<output>3/50 = around 0.06</output>

<result>3/50 = around 0.06</result>