The length of a rectangular piece of paper is 5 cm and the width is 3 cm. If a largest square is cut out of this paper, what is the area of the square in square centimeters?
一个长方形纸片的长5厘米，宽3厘米，如果在这张纸上剪一个最大的正方形，那么这个正方形的面积是多少平方厘米．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>