After cutting a 3-meter-long cylinder into 3 sections, the surface area increases by 37.68 square decimeters. What is the original volume of the cylinder?
把一个长3米圆柱截成3段后，表面积增加了37.68平方分米，这个圆柱原来的体积是多少平方分米．
<gadget id="calculator">37.68 / 4</gadget>
<output>9.42</output>

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

<gadget id="calculator">9.42 * 30</gadget>
<output>282.6</output>

<result>282.6</result>