Cut a cylindrical piece of wood with a length of 5 meters into 3 sections, and the surface area increases by 45.12 square centimeters. What is the volume of this piece of wood in square centimeters?
把一根长5米的圆柱形木料截成3段，表面积增加了45.12平方厘米，这根木料的体积是多少平方厘米．
<gadget id="calculator">45.12 / 4</gadget>
<output>11.28</output>

<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<gadget id="calculator">11.28 * 500</gadget>
<output>5_640</output>

<result>5_640</result>