An isosceles triangle, one side is 8 cm long, the other side is 4 cm long, what is the third side long in cm?
一个等腰三角形，一条边长8厘米，另一条边长4厘米，第三条边长多少厘米．
<gadget id="calculator">4 + 4</gadget>
<output>8</output>

<result>8</result>