A cylinder is 6 meters long. After cutting it into 2 sections, the surface area increases by 6.28 square meters. What is the volume of this cylinder?
一个圆柱长6米，截成2段后，表面积6.28增加了平方米，这个圆柱的体积是多少．
<gadget id="calculator">6.28 / 2</gadget>
<output>3.14</output>

<gadget id="calculator">3.14 * 6</gadget>
<output>18.84</output>

<result>18.84</result>