Fold the largest square out of a rectangular piece of paper with a length of 10 cm and a width of 6 cm. What is the perimeter of the square in cm?
用一张长10厘米，宽6厘米的长方形纸片折一个最大的正方形，正方形的周长是多少厘米．
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>