A cube gift box with side length 6cm, at least how many cm**2 wrapping paper should be used to wrap this gift box.
一个正方体的礼品盒，棱长6cm，包装这个礼品盒至少要用多少cm**2的包装纸．
<gadget id="calculator">6 * 6 * 6</gadget>
<output>216</output>

<result>216</result>