The desktop of a square table is a square with a side length of 8 decimeters. Aluminum alloy bars are installed around the table top. How long is the minimum aluminum alloy bar required?
一张方桌的桌面是边长为8分米的正方形，在桌面四周安上铝合金条，至少需要多长的铝合金条？
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>