Cut out the largest square from a rectangular piece of paper with a length of 12 cm and a width of 8 cm. What is the perimeter of this square in cm?
在一个长12厘米，宽8厘米的长方形纸片上剪下一个最大的正方形，这个正方形的周长是多少厘米．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>