A rectangular parallelepiped container with a square base, 12 cm high, and a square when its sides are unfolded. What is the volume of this container in cubic centimetres.
一个底面是正方形的长方体容器，高12厘米，侧面展开刚好是一个正方形．这个容器的容积是多少立方厘米．
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 * 3 * 12</gadget>
<output>108</output>

<result>108</result>