A cylinder, if its height is shortened by 4 centimeters, the surface area will be reduced by 125.6 square centimeters, and its volume will be reduced by how many cubic centimeters.
一个圆柱体，如果把它的高截短4厘米，表面积就减少125.6平方厘米，它的体积减少多少立方厘米．
<gadget id="calculator">125.6 / 4 / 3.14 / 2</gadget>
<output>5</output>

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

<gadget id="calculator">3.14 * 25 * 4</gadget>
<output>314</output>

<result>314</result>