The perimeter of a triangle is 36cm, two of its sides are 16cm and 9cm respectively, what is the length of the third in cm
一个三角形的周长是36cm，其中两条边分别是16cm，9cm，第三条长是多少cm
<gadget id="calculator">36 - 16 - 9</gadget>
<output>11</output>

<result>11</result>