If a cylindrical piece of wood with a length of 2m is divided into two sections, the surface area is increased by 25.12cm**2 compared with the original one, what is the volume of this piece of wood?
把一根长2m的圆柱形木料划成两段，表面积比原来增加了25.12cm**2，这根木料的体积是多少．
<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>