A 27 cm long iron wire is folded into an equilateral triangle iron frame, what is the length of one side of it in cm?
将27厘米长的铁丝折成一个等边三角形铁框，它的一条边长是多少厘米．
<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<result>9</result>