If a cylinder with a height of 10dm is cut into three cylinders, the surface area increases by 0.12 square decimeters. What is the volume of the original cylinder?
把一个高是10dm的圆柱体截成三个圆柱体，表面积增加了0.12平方分米，原来圆柱体的体积是多少立方分米．
<gadget id="calculator">0.12 / 4</gadget>
<output>0.03</output>

<gadget id="calculator">0.03 * 10</gadget>
<output>0.3</output>

<result>0.3</result>