A cube gift box with a side length of 7 cm, at least how many square centimeters of wrapping paper should be used to wrap this gift box.
一个正方体礼盒，棱长7厘米，包装这个礼盒至少要用多少平方厘米的包装纸．
<gadget id="calculator">7 * 7 * 6</gadget>
<output>294</output>

<result>294</result>