A cylindrical wooden stick with a length of 5m is cut into three sections, and the surface area increases by 60dm**2. What is the volume of this cylindrical wooden stick dm**3.
一根长5m的圆柱形木棒，把它截成三段，表面积增加了60dm**2，这根圆柱形木棒的体积是多少dm**3．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<gadget id="calculator">15 * 50</gadget>
<output>750</output>

<result>750</result>