Question

Периметр треугольника равен 98см. Одна из его сторон вдвое меньше другой и меньше третьей на 2см. Чему равны стороны треугольника? Выберети еденицу длины и нарисуйте этот треугольник? Какой вид треугольнека.

Answer 1

Пусть самая маленькая сторона х
другая 2х см
третья х+2 см
х+2х+х+2=98
4х=96
х=24 см
2х=48 см
х+2=25+2=26 см
Ответ 24, 26, 48

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 98 cm.

Relationship between the Sides

According to the given information, one side of the triangle is half the length of another side and is also 2 cm shorter than the third side.

Let's assume the lengths of the sides of the triangle are x, 2x - 2, and 2x.

Finding the Lengths of the Sides

To find the lengths of the sides, we can set up an equation using the perimeter of the triangle.

The equation is: x + (2x - 2) + 2x = 98

Simplifying the equation, we get: 5x - 2 = 98

Solving for x, we find: x = 20

Now, we can substitute the value of x back into the expressions for the lengths of the sides to find their values.

The lengths of the sides of the triangle are: - First side: x = 20 cm - Second side: 2x - 2 = 2(20) - 2 = 38 cm - Third side: 2x = 2(20) = 40 cm

Therefore, the lengths of the sides of the triangle are 20 cm, 38 cm, and 40 cm.

Unit of Length and Triangle Type

The unit of length is centimeters (cm).

Based on the given information, the triangle is an isosceles triangle because it has two sides of equal length (20 cm and 40 cm) and one side of a different length (38 cm).