A rectangle with a length of 16 cm becomes a square if its length is reduced by 6 cm. What is the area of this square in square centimeters?
一个长方形长16厘米，如果长减少6厘米，就变成了一个正方形．这个正方形面积是多少平方厘米？
<gadget id="calculator">16 - 6</gadget>
<output>10</output>

<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<result>100</result>