The two adjacent sides of an isosceles triangle are 5.6 cm and 13.5 cm respectively, what is its perimeter in cm?
等腰三角形相邻两条边分别是5.6厘米和13.5厘米，它的周长是多少厘米．
<gadget id="calculator">5.6 + 13.5 + 13.5</gadget>
<output>32.6</output>

<result>32.6</result>