# Find the perimeter of the triangle if the AB side is 15cm, the BC side is 8cm larger

September 30, 2021 | education

| **Find the perimeter of the triangle if the AB side is 15cm, the BC side is 8cm larger, and the AC side is 5cm smaller than the BC side.**

1. Let’s calculate the length of the BC side, since it is known how much it is larger than the AB side.

15 + 8 = 23 centimeters.

2. To find out the perimeter, you need to know the size of all its sides. Let’s define the third party.

23 – 5 = 18 centimeters.

3. What is the perimeter of the triangle.

15 + 23 + 18 = 56 centimeters.

Answer: 56 centimeters.

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