The first side of the triangle is 78 cm, which is 16 cm less than the second side, and the third side is 2 times

The first side of the triangle is 78 cm, which is 16 cm less than the second side, and the third side is 2 times less than the sum of the first and second sides, which is equal to the pyrimeter of the triangle.

The first side of the triangle is 78 centimeters long.
The second side of the figure is 16 centimeters larger than the first.
The third party is 2 times less than the sum of the other two parties.
Find the size of the second side of the triangle:
78 + 16 = 94 centimeters.
Let’s calculate the sum of two known sides:
78 + 94 = 172 centimeters.
Let’s calculate the last side of the figure:
172: 2 = 86 centimeters.
Find the perimeter of this triangle:
78 + 94 + 86 = 258 centimeters.
Answer: 258 centimeters.