If a rectangle with a length of 12 cm and a width of 6 cm is divided into two squares, what is the perimeter of each square in cm?
把一个长12厘米，宽6厘米的长方形，平均分成两个正方形，每个正方形的周长是多少厘米．
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>