A cylindrical wood with a length of 3.6 meters, after sawing it into three sections, increases the surface area by 12.4 square meters. What is the volume of this piece of wood in cubic meters?
一根长3.6米的圆柱形木材，将它锯成三段后，表面积增加了12.4平方米．这根木材的体积是多少立方米？
<gadget id="calculator">12.4 / 4</gadget>
<output>3.1</output>

<gadget id="calculator">3.1 * 3.6</gadget>
<output>11.16</output>

<result>11.16</result>