A cuboid with a square base and a height of 2.4 decimeters is exactly a square when its sides are unfolded. What is the volume of this cuboid?
一个底面是正方形的长方体，高是2.4分米，侧面展开后，恰好是一个正方形，这个长方体的体积是多少？
<gadget id="calculator">2.4 / 4</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 * 0.6 * 2.4</gadget>
<output>0.864</output>

<result>0.864</result>