A wire can form a square with a side length of 6 cm. If it is changed into an equilateral triangle, what is the side length of this equilateral triangle?
一根铁丝可以围成一个边长是6厘米的正方形，如果改围作一个等边三角形，则这个等边三角形的边长是多少厘米．
<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>