When a wire encloses a parallelogram with a base of 12 cm, the area is 60 cm2. If this wire is used to form a rectangle with a length of 12 centimeters, the area increases by 12 square centimeters. What is the length of this wire in centimeters.
一根铁丝围成一个底为12厘米的平行四边形时，面积为60平方厘米．如果用这根铁丝围成一个长是12厘米的长方形时，面积增加了12平方厘米．这根铁丝的长是多少厘米．
<gadget id="calculator">60 + 12</gadget>
<output>72</output>

<gadget id="calculator">72 / 12</gadget>
<output>6</output>

<gadget id="calculator">12 + 6</gadget>
<output>18</output>

<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<result>36</result>