After sawing a cylindrical piece of wood with a length of 2m into two small cylinders, the surface area increases by 25.12cm**2, what is the original volume of this piece of wood in cm**3.
把一根长2m的圆柱形木料锯成两段小圆柱后，表面积增加了25.12cm**2，这根木料原来的体积是多少cm**3．
<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

<gadget id="calculator">2 * 100</gadget>
<output>200</output>

<gadget id="calculator">12.56 * 200</gadget>
<output>2_512</output>

<result>2_512</result>