A 60 cm wire is used to form an isosceles triangle with a base length of 22 cm. What is the length of a waist in cm?
用一根60厘米的铁丝围成一个等腰三角形，它的底长22厘米，那么一条腰长是多少厘米？
<gadget id="calculator">60 - 22</gadget>
<output>38</output>

<gadget id="calculator">38 / 2</gadget>
<output>19</output>

<result>19</result>