One of the sides of the triangle is 12 cm. The second is 0.7 of the first, and the third is 6/7 of the second.

univerkov | February 9, 2021 | education

One of the sides of the triangle is 12 cm. The second is 0.7 of the first, and the third is 6/7 of the second. find the perimeter of the triangle.

1. As we know that one of the sides of the triangle is 12 cm, and the second is 0.7 of the first, therefore we can calculate the length of the second side of the triangle.

12 * 0.7 = 8.4 cm.

2. By the condition of the problem, the third side is 6/7 of the length of the second side of the triangle, so we can find the length of the third side

8.4 * 6/7 = 84/10 * 6/7 = (84 * 6) / (10 * 7) = 504/70 = 7.2 cm.

3. Next we can find the perimeter of the triangle.

P = 12 + 8.4 + 7.2 = 27.6 cm.

Answer: The perimeter of the given triangle is 27.6 cm.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.