One side of the triangle is 12 cm, it is 4 cm more than the second side 3 cm more than 3 calculate

One side of the triangle is 12 cm, it is 4 cm more than the second side 3 cm more than 3 calculate the perimeter of this triangle.

Let’s solve this task by actions and explain in detail each of them.

1) 12 – 4 = 8 centimeters – the length of the second side of the triangle, since it is 4 centimeters shorter than the first side, and the first side is 12 centimeters;

2) 12 – 3 = 9 centimeters – the length of the third side of the triangle, since it is 3 centimeters shorter than the first side, and the first side is 12 centimeters;

3) 8 + 12 + 9 = 29 centimeters – the perimeter of a triangle with sides of 8 centimeters, 12 centimeters and 9 centimeters.

Answer: 29 centimeters.