After the 1m-long cylindrical steel is cut into two cylindrical steels, the surface area increases by 0.8dm**2, what is the original volume of the steel in dm**3.
把1m长的圆柱形钢材截成两段圆柱形钢材后，表面积增加了0.8dm**2，原来钢材的体积是多少dm**3．
<gadget id="calculator">1.6 * 10</gadget>
<output>16</output>

<result>16</result>