If the perimeter of an isosceles triangle is 50 cm and the length of the base is 14 cm, what is the length of one of its sides?
一个等腰三角形的周长是50厘米，底边长14厘米，它的一条腰长多少米．
<gadget id="calculator">50 - 14</gadget>
<output>36</output>

<gadget id="calculator">36 / 2</gadget>
<output>18</output>

<result>18</result>