Weld a 72 cm long iron wire into a cube frame. How many square centimeters of cardboard is needed to surround this frame with cardboard to form a cube.
把一根长72厘米的铁丝焊接成一个正方体框架．把这个框架用硬纸围成一个正方体，需要硬纸板多少平方厘米．
<gadget id="calculator">72 / 12</gadget>
<output>6</output>

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

<result>216</result>