A piece of iron wire forms a rectangle with a length of 16cm and a width of 8cm. If it is changed into a square, what is the area of the square in cm**2.
一根铁丝围成里一个长16cm，宽8cm的长方形，如果把它改围成一个正方形，这个正方形的面积是多少cm**2．
<gadget id="calculator">16 + 8</gadget>
<output>24</output>

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 12</gadget>
<output>144</output>

<result>144</result>