Use a 60 cm long iron wire to form the largest isosceles triangle whose base is 10 cm. What is the length of one side of this isosceles triangle?
用一根长60厘米的铁丝，围成一个底边是10厘米的最大等腰三角形，这个等腰三角形的一条腰长是多少厘米？
<gadget id="calculator">60 - 10</gadget>
<output>50</output>

<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<result>25</result>