# The perimeter of the triangle is 43 cm, the first wall is 1.9 cm longer than the second.

June 27, 2021 | education

| **The perimeter of the triangle is 43 cm, the first wall is 1.9 cm longer than the second. the first wall of the third is 2.1 cm. you need to find the length of each wall.**

Let’s denote the second side of the triangle by x.

By condition, the first side is 1, 9 cm longer than the second, then we get the first side: x + 1, 9.

The third side will be equal to: x + 2, 1.

It is known that the perimeter of a triangle is 43.

Let’s make the equation:

x + (x + 1, 9) + (x + 2, 1) = 43.

3 x = 43 – 2, 1 – 1, 9.

3 x = 39.

x = 13.

Let’s find the rest of the sides:

13 + 1, 9 = 14, 9.

13 + 2, 1 = 15, 1.

Answer: the sides of the triangle are 13 cm, 14, 98 cm and 15.1 cm.

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