If the width of the rectangle is increased by 5 cm and the length is decreased by 3 cm, a square is obtained. It is known that the area of the square is 60 cm2 larger than the area of the rectangle. Find the area of the square?
长方形的宽如果增加5厘米，长减少3厘米，得到一个正方形，已知正方形的面积比长方形的面积大60平方厘米，求正方形的面积？
<gadget id="calculator">22.5 * 22.5</gadget>
<output>506.25</output>

<result>506.25</result>