To solve this problem, remember that the perimeter of a triangle is equal to the sum of the lengths of all its three sides. Let’s calculate what the perimeter of triangle ABC is equal to with sides AB = 3 centimeters, BC = 6 centimeters, CA = 7 centimeters.
P = 3 + 6 + 7 = 16 centimeters.
Answer: 16 centimeters.
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