Paste a layer of advertising paper on the four sides of a cube can with a side length of 12 cm (the upper and lower sides are not pasted), at least how many cm**2 advertising paper is needed.
给一个棱长12cm的正方体罐头盒四周(上、下面不贴)贴上一层广告纸，至少需要多少cm**2的广告纸．
<gadget id="calculator">12 * 12 * 4</gadget>
<output>576</output>

<result>576</result>