Question

Периметр рівнобедреного трикутника дорівнює 28см, а бічна сторона - 10см. Знайдіть основу трикутника.

Answer 1

У равнобедренного треугольника боковые стороны равны,
10*2=20см- длина боковых сторон
28-20=8см- основание

Answer 2

Периметр трикутника дорівнює сумі його сторін
Бічні сторони рівнобедреного трикутника однакові
28-10*2=8 (см)

Answer 3

Finding the Base of an Isosceles Triangle

To find the base of an isosceles triangle, we need to use the given information about the perimeter and the length of one of the sides.

Given: - Perimeter of the triangle = 28 cm - Length of one of the sides (also known as the base) = 10 cm

To find the base of the triangle, we can use the formula for the perimeter of an isosceles triangle, which states that the perimeter is equal to twice the length of one of the equal sides plus the length of the base.

Let's denote the length of the base as 'b' and the length of the equal sides as 's'. According to the given information, we have:

Perimeter = 2s + b

Substituting the given values into the equation, we get:

28 = 2s + 10

To solve for 's', we can isolate it by subtracting 10 from both sides of the equation:

2s = 28 - 10 2s = 18

Dividing both sides of the equation by 2, we find:

s = 9

Therefore, the length of each of the equal sides is 9 cm.

Now that we know the length of the equal sides, we can find the length of the base by subtracting twice the length of one of the equal sides from the perimeter:

b = Perimeter - 2s b = 28 - 2(9) b = 28 - 18 b = 10

Therefore, the length of the base of the isosceles triangle is 10 cm.

Please let me know if there's anything else I can help you with!