A rectangle with a length of 38 cm and a width of 22 cm can be formed with a wire. If the wire is changed into a square, what will happen to the area? (explain by calculation)
用一根铁丝可以围成一个长38厘米，宽22厘米的长方形．如果把这根铁丝改围成一个正方形，面积会发生怎样的变化？(用计算说明)
<gadget id="calculator">38 + 22</gadget>
<output>60</output>

<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<gadget id="calculator">30 * 30</gadget>
<output>900</output>

<gadget id="calculator">38 * 22</gadget>
<output>836</output>

<gadget id="calculator">900 - 836</gadget>
<output>64</output>

<result>64</result>