Final answer:
The perimeter of triangle ABC, with sides AB = 6 cm, BC = 11 cm, and CA = 9 cm, is 26 cm.
Step-by-step explanation:
To find the perimeter of a triangle, you simply need to add up the lengths of all the sides. In triangle ABC, these are AB, BC, and CA. Given that AB = 6 cm, BC = 11 cm, and CA = 9 cm, we'll perform the arithmetic: 6 cm + 11 cm + 9 cm = 26 cm. Therefore, the perimeter of triangle ABC is 26 cm.
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