cylindrical piece of wood is 1.5 meters long. If it is cut into two sections along the direction parallel to the bottom, the sum of the surface area increases by 12 square decimeters. What is the volume of this piece of wood in cubic decimeters?
一个圆柱形的木料长1.5米，把它沿着与底面平行的方向截成两段，表面积之和增加了12平方分米，原来这根木料的体积是多少立方分米．
<result>80</result>