Cutting a 3-meter-long cylindrical wood into two cylinders of the same size increases the surface area by 120 square decimeters. What is the volume of this piece of wood in square feet.
把一根长3米的圆柱形木料截成同样大的两个圆柱，表面积增加了120平方分米．这根木料的体积是多少平方分米．
<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">60 * 30</gadget>
<output>1_800</output>

<result>1_800</result>