Stick a circle of label paper around a cube product packaging box with a side length of 3 decimeters. How big is the label paper?
在一个棱长是3分米的正方体商品包装盒四周贴一圈商标纸，商标纸需要多大？
<gadget id="calculator">3 * 3 * 4</gadget>
<output>36</output>

<result>36</result>