Question

Периметр трикутника 79 см. Чому дорівнюють довжини його сторін, якщо одна з них більша від іншої на 5 см і менша від третьої на 12 см?

Answer 1

Ответ:

24 см,  19 см,   36 см

Объяснение:

Перша сторона х см, друга сторона х-5 см, третя сторона х+12 см.

х+х-5+х+12=79

3х=72

х=24

Перша сторона 24 см, друга сторона 24-5=19 см, третя сторона 24+12=36  см.

Answer 2

Perimeter of the Triangle

The perimeter of a triangle is the sum of the lengths of its three sides. In this case, the perimeter of the triangle is given as 79 cm.

Lengths of the Sides

Let's denote the lengths of the three sides of the triangle as follows: - Side 1: x cm - Side 2: (x + 5) cm (one side is greater than the other by 5 cm) - Side 3: (x + 12) cm (one side is smaller than the third side by 12 cm)

To find the lengths of the sides, we can set up an equation based on the given information:

x + (x + 5) + (x + 12) = 79

Simplifying the equation, we get:

3x + 17 = 79

Subtracting 17 from both sides:

3x = 62

Dividing both sides by 3:

x = 20.67

Therefore, the lengths of the sides of the triangle are approximately: - Side 1: 20.67 cm - Side 2: 25.67 cm (20.67 + 5) - Side 3: 32.67 cm (20.67 + 12)

Please note that these values are approximate due to rounding.