rectangle with a length of 18 cm and a width of 8 cm, from which a largest square is cut, what is the perimeter of the square in cm?
一个长方形长18厘米，宽8厘米，从中截取一个最大的正方形，正方形的周长是多少厘米．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<result>32</result>