If the two sides of an isosceles triangle are 6 cm and 3 cm, what is the third side in cm?
一个等腰三角形的两条边分别是6厘米和3厘米，那么第三条边是多少厘米．
<gadget id="calculator">3 + 3</gadget>
<output>6</output>

<result>6</result>