One side of the triangle is 12cm, the second side is 3 times larger than the first, and the third is 8cm smaller

| June 17, 2021 | education

One side of the triangle is 12cm, the second side is 3 times larger than the first, and the third is 8cm smaller than the second, find the perimeter of the triangle.

Let’s find the value of the second side of this triangle, for this it is necessary to increase the value of the first side three times:

12 cm * 3 = 36 cm – the value of the second side of this triangle;

Find the value of the third side of this triangle, for this it is necessary to reduce the value of the second side by 8 cm:

36 cm – 8 cm = 28 cm – the value of the third side of the triangle;

Let’s find the value of the perimeter of this rectangle, for this it is necessary to add the values ​​of the three sides of this triangle:

12 cm + 36 cm + 28 cm = 76 cm – the value of the perimeter of this triangle.

Answer: 76 cm is the value of the perimeter of this triangle.



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