A cylindrical steel with a length of 10m is cut into two identical cylinders, and the surface area increases by 6dm**2. What is the volume of this steel in cubic decimeters?
一根长10m的圆柱形钢材，切成两个一样的圆柱体后，表面积增加6dm**2，求这根钢材的体积是多少立方分米？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 * 10 * 10</gadget>
<output>300</output>

<result>300</result>