The length of the base of an isosceles triangle is 8 cm, and the length of the waist is 6 cm. How many centimeters of rope are needed to enclose this isosceles triangle?
一个等腰三角形的底边长8厘米，腰长6厘米，围成这个等腰三角形需要多少厘米长的绳子．
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">8 + 12</gadget>
<output>20</output>

<result>20</result>