Question

Знайдіть периметр трикутника АВС , Якщо АС = 7 см, АВ = на 5 см більша за АС і на 3 см менша від ВС .

Answer 1

Ответ:

34см

Пошаговое объяснение:

AB=7см+5см=12см

BC=12см+3см=15см

P=7см+12см+15см=34см

Answer 2

Finding the Perimeter of Triangle ABC

To find the perimeter of triangle ABC, we need to know the lengths of its three sides: AB, AC, and BC.

Given the information provided, we know that AC is 7 cm, AB is 5 cm longer than AC, and BC is 3 cm shorter than AC.

Let's calculate the lengths of AB and BC:

- AB = AC + 5 cm - BC = AC - 3 cm

Substituting the given values, we get:

- AB = 7 cm + 5 cm = 12 cm - BC = 7 cm - 3 cm = 4 cm

Now that we have the lengths of all three sides, we can calculate the perimeter of triangle ABC by adding the lengths of AB, AC, and BC:

- Perimeter = AB + AC + BC = 12 cm + 7 cm + 4 cm = 23 cm

Therefore, the perimeter of triangle ABC is 23 cm.