If the base is a square cuboid, if the height is shortened by 5 cm to form a cube, then the surface area will be reduced by 1.2 square decimeters. Find the volume of the cube.
底面是正方形的长方体，高缩短5厘米成为正方体，则表面积减少1.2平方分米，求正方体的体积．
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 6 * 6</gadget>
<output>216</output>

<result>216</result>