Cut out the largest square on a piece of rectangular paper with a length of 5 decimeters and a width of 3 decimeters. What is the area of the cut square in square decimeters?
在一张长5分米，宽3分米的长方形纸上剪下一个最大的正方形，剪下的这个正方形的面积是多少平方分米．
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<result>9</result>