A cylindrical wood with a length of 2 meters is sawn into two small cylinders of the same length, and the surface area increases by 12.56 square centimeters. What is the volume of each small cylinder?
一根长2米的圆柱形木料，锯成两段同样长的小圆柱，表面积增加12.56平方厘米，每个小圆柱的体积是多少．
<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">6.28 * 2 * 50</gadget>
<output>628</output>

<result>628</result>