Question

2.Знайдіть сторони рівнобедреного трикутника, периметер якого 140 см, основа у 3 рази менша від бічної сторони

Answer 1

Пусть боковая сторона равнобедренного треугольника - х, составим уравнение:
2х+х/3=140
7х/3=140
7х=140*3
7х=420
х=420/7
х=60
боковая сторона= 60 см

Answer 2

Finding the Sides of an Isosceles Triangle

To find the sides of an isosceles triangle, we need to know the perimeter and the relationship between the base and the other two sides.

Let's denote the base of the triangle as 'b' and the other two sides as 's'. According to the given information, the perimeter of the triangle is 140 cm, and the base is three times smaller than the other side.

We can set up the equation for the perimeter of the triangle:

Perimeter = base + side + side

Substituting the given information into the equation:

140 = b + s + s

Since the base is three times smaller than the other side, we can express the base in terms of the other side:

b = s/3

Substituting this expression into the perimeter equation:

140 = s/3 + s + s

Simplifying the equation:

140 = s/3 + 2s

To solve for 's', we can multiply both sides of the equation by 3 to eliminate the fraction:

420 = s + 6s

420 = 7s

Dividing both sides of the equation by 7:

s = 60

Now that we have the value of 's', we can substitute it back into the expression for the base to find its value:

b = s/3 = 60/3 = 20

Therefore, the sides of the isosceles triangle are 60 cm, 60 cm, and 20 cm.

Please note that the above calculations are based on the information provided and may vary depending on the specific problem or context.