If a cylinder with a height of 1 meter is cut into two cylinders, the surface area is increased by 6dm**2, what is the volume of the original cylinder dm**3.
把高1米的圆柱切成两个圆柱体，表面积增加了6dm**2，则原来圆柱体的体积是多少dm**3．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<result>30</result>