If a triangle is surrounded by a 24 cm long wire, the length of the longest side of the triangle must be less than how much.
用一根长24厘米的铁丝围城一个三角形，这个三角形的最长的一条边的长度要小于多少．
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<result>12</result>