A timber processing plant saws a 30-meter-long cylindrical timber into 3 sections, increasing the surface area by 50.24 square meters. What is the volume of this timber in cubic meters?
木材加工厂将一根30米长的圆柱形木材锯成3段，表面积增加了50.24平方米，这根木材的体积是多少立方米？
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">50.24 / 4</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 * 20</gadget>
<output>251.2</output>

<result>251.2</result>