If a 2-meter-long cylinder of wood is cut into three cylinders, the surface area increases by 36 square decimeters, what is the volume of this cylinder of wood in cubic decimeters?
把一根2米长的圆柱体木料截成三段圆柱体，表面积增加了36平方分米，这根圆柱体木料的体积是多少立方分米．
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">9 * 20</gadget>
<output>180</output>

<result>180</result>