The lengths of the two adjacent sides of an isosceles triangle are 3 decimeters and 8 decimeters, what is the perimeter of the triangle?
一个等腰三角形相邻的两条边的长分别是3分米和8分米，这个三角形的周长是多少分米
<gadget id="calculator">8 + 8 + 3</gadget>
<output>19</output>

<result>19</result>