An equilateral triangle is formed by an iron wire 18 cm long. What is the length of each side of the triangle in cm?
用一根18cm长的铁丝围成一个等边三角形，这个三角形每条边的长度是多少cm．
<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<result>6</result>