A 25.12 cm long iron wire is welded into a ring, what is the maximum diameter of the ring in cm?
用一根25.12厘米长的铁丝焊接成一个圆环，圆环的最大直径是多少厘米．
<gadget id="calculator">25.12 / 3.14</gadget>
<output>8</output>

<result>8</result>