A cylinder with a height of 6cm, if its height is shortened by 3cm, its surface area will be reduced by 94.2cm**2, what is the volume of this cylinder in cm**3.
一个高6cm的圆柱，如果把它的高截短3cm，它的表面积就减少94.2cm**2，这个圆柱的体积是多少cm**3．
<gadget id="calculator">94.2 / 3</gadget>
<output>31.4</output>

<gadget id="calculator">31.4 / 3.14 / 2</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 6</gadget>
<output>471</output>

<result>471</result>