The perimeter of an isosceles triangle is 68cm, the length of its base is 24cm, what is the length of its waist in centimeters.
一个等腰三角形的周长是68cm，它的底边长是24cm，它的腰长是多少厘米．
<gadget id="calculator">68 - 24</gadget>
<output>44</output>

<gadget id="calculator">44 / 2</gadget>
<output>22</output>

<result>22</result>