Cut out the largest square on a piece of rectangular paper with a length of 15 cm and a width of 12 cm. What is the area of this square in square centimeters?
在一张长15厘米，宽12厘米的长方形纸上，剪下一个最大的正方形，这个正方形的面积是多少平方厘米？
<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<result>144</result>