Connect three identical cylinders to form a large cylinder with a length of 9 cm and a reduction in surface area of 12.56 square decimeters. What is the volume of each cylinder in cubic centimeters?
把3个完全一样的圆柱，连接成一个大圆柱，长9厘米，表面积减少12.56平方分米．原来每个圆柱的体积是多少立方厘米？
<gadget id="calculator">12.56 / 4</gadget>
<output>3.14</output>

<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">3.14 * 3</gadget>
<output>9.42</output>

<result>9.42</result>