Fangfang has a square handkerchief with a side length of 24 cm. Mom sewed beautiful lace around the handkerchief. How many centimeters is the lace long?
芳芳有一块正方形手帕，边长24厘米．妈妈给手帕四周缝上了漂亮的花边，花边长多少厘米？
<gadget id="calculator">24 * 4</gadget>
<output>96</output>

<result>96</result>