One side of the triangle is 4.5 cm, which is 3.3 cm less than the second side and 0.6 cm more than the third. Find the perimeter of the triangle.
Let’s solve this task by action.
1) 4.5 + 3.3 = 7.8 centimeters – the length of the second side of the triangle, since it is 3.3 centimeters longer than the second side, and the length of the second side is 4.5 centimeters;
2) 4.5 – 0.6 = 3.9 centimeters – the length of the third side, since it is 0.6 centimeters less than the first side;
3) 4.5 + 3.9 + 7.8 = 8.4 + 7.8 = 16.2 centimeters – the perimeter of a triangle with sides of 4.5 centimeters, 3.9 centimeters, 7.8 centimeters.
Answer: 16.2 centimeters.
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