If the sides of an isosceles triangle are 2 cm and 5 cm, what is the perimeter of the isosceles triangle?
一个等腰三角形的两条边长分别是2厘米和5厘米，这个等腰三角形的周长是多少．
<gadget id="calculator">5 + 5 + 2</gadget>
<output>12</output>

<result>12</result>