A rectangle with a length of 8 cm and a width of 6 cm is surrounded by a piece of iron wire (no residue). If this wire is used to form a largest square, what is the area of the square in square centimeters?
用一根铁丝围成一个长8厘米，宽6厘米的长方形(无剩余)，如果用这根铁丝围成一个最大的正方形，那么正方形的面积是多少平方厘米．
<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<gadget id="calculator">28 / 4</gadget>
<output>7</output>

<gadget id="calculator">7 * 7</gadget>
<output>49</output>

<result>49</result>