An isosceles triangle has a perimeter of 34 cm and a waist of 10 cm. What is the length of the base of the triangle?
一个等腰三角形的周长是34厘米，腰长10厘米，这个三角形的底边长是多少厘米？
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">34 - 20</gadget>
<output>14</output>

<result>14</result>