The perimeter of an isosceles triangle is 38 centimeters, its base is 14 centimeters, and its waist is in centimeters.
一个等腰三角形的周长是38厘米，它的底长14厘米，一个腰长多少厘米．
<gadget id="calculator">38 - 14</gadget>
<output>24</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<result>12</result>