A cylindrical log with a height of 8 decimeters is cut into two half cylinders along the diameter of the bottom surface, and the surface area is increased by 32 square decimeters. What is the volume of this piece of wood in cubic decimeters?
一根圆柱形木料高8分米，沿底面直径切成两个半圆柱，表面积增加了32平方分米．那么这根木料的体积是多少立方分米．
<gadget id="calculator">32 / 2 / 8</gadget>
<output>2</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 8</gadget>
<output>25.12</output>

<result>25.12</result>