Use a rope 32 meters long to form an isosceles triangle. It is known that the waist length of the isosceles triangle is 12 meters. How many meters is the base of the isosceles triangle?
用一根32米长的绳子围成一个等腰三角形，已知等腰三角形的腰长为12米，等腰三角形的底是多少米？
<gadget id="calculator">32 - 24</gadget>
<output>8</output>

<result>8</result>