A rectangle becomes a square if its length is shortened by 6 meters. The area of this square is 48 square meters less than the area of the original rectangle. What is the area of this square in square meters?
一个长方形，如果将长缩短6米，就成了一个正方形．这个正方形的面积比原长方形的面积少48平方米，这个正方形的面积是多少平方米．
<gadget id="calculator">48 / 6</gadget>
<output>8</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<result>64</result>