If a cylinder with a height of 6 cm is cut into two smaller cylinders, the surface area increases by 31.4 cm, what is the volume of the original cylinder in cubic centimeters?
把一个高为6厘米的圆柱体切成两个小的圆柱体，表面积增加了31.4厘米，原来那个圆柱体的体积是多少立方厘米．
<gadget id="calculator">31.4 / 2</gadget>
<output>15.7</output>

<gadget id="calculator">15.7 * 6</gadget>
<output>94.2</output>

<result>94.2</result>