9-meter-long cylindrical wood is cut into 3 sections on average, and the surface area increases by 3.6 square meters. What is the volume of this log in cubic meters
把一根9米长的圆柱形木料，平均截成3段，表面积增加了3.6平方米．这根木料的体积是多少立方米
<gadget id="calculator">3.6 / 4</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 * 9</gadget>
<output>8.1</output>

<result>8.1</result>