A cylindrical piece of wood is 1 meter long. After cutting it into two equal small cylindrical pieces of wood, the surface area increases by 25.12 square centimeters. What is the volume of the original cylinder in cubic centimeters?
一根圆柱形木料长1米，把它截成了相等的2个小圆柱形木料后，表面积增加了25.12平方厘米，原来圆柱的体积是多少立方厘米．
<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 * 1 * 100</gadget>
<output>1_256</output>

<result>1_256</result>