A cylinder is 8cm high, if its height is reduced by 2cm, the surface area will be reduced by 12.56cm**2. What is the volume of the original cylinder in cubic centimeters?
一个圆柱高8cm，如果它的高减少2cm，表面积就减少12.56cm**2．原来圆柱的体积是多少立方厘米？
<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3.14 * 1 * 8</gadget>
<output>25.12</output>

<result>25.12</result>