A piece of rectangular paper with a length of 24 cm and a width of 12 cm is cut from the middle into two square pieces of paper. What is the perimeter of a square piece of paper in centimeters?
一张长方形的纸，长24厘米，宽12厘米，从中间剪开成两张正方形纸片，一张正方形纸片的周长是多少厘米？
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<result>48</result>