After a 4-meter-long cylinder of wood is cut into 3 sections, the surface area increases by 25.12cm**2, so what is the original volume of the cylinder of wood in dm**3.
将一个长4米的圆柱体木料横截成3段后，表面积增加25.12cm**2，那么这个圆柱体木料原来的体积是多少dm**3．
<gadget id="calculator">25.12 / 4 / 100</gadget>
<output>0.0628</output>

<gadget id="calculator">0.0628 * 4 * 10</gadget>
<output>2.512</output>

<result>2.512</result>