Question

Сторони трикутника відносяться як 4 8 9 знайти довжини сторін якщо периметир 31,5см

Answer 1

Ответ:

6см,12см и 13,5 см

Пошаговое объяснение:

4+8+9= 21  частей всего

31,5:21=1,5 см- это одна часть

1,5*4=6 см одна сторона

1,5*8=12 см вторая сторона

1,5*9= 13,5 см  третья сторона

Answer 2

Ответ:

4x+8x+9x=31.5

21х=31,5

х=1,5

Пошаговое объяснение:

a(4x)=4*1.5=6

b(8x)=8*1.5=12

c(9x)=9+1.5=13.5

Answer 3

Finding the Lengths of the Triangle Sides

To find the lengths of the sides of a triangle when the ratios of the sides are given, we can use the following steps:

Step 1: Assign variables to the lengths of the sides. Let's call them a, b, and c.

Step 2: Express the ratios of the sides in terms of these variables. According to the given information, the ratios of the sides are 4:8:9. This means that:

a:b:c = 4:8:9

Step 3: Determine the value of the common ratio. To find the common ratio, we need to add up the ratios:

4 + 8 + 9 = 21

Step 4: Solve for the lengths of the sides. We can use the common ratio to find the lengths of the sides:

a = (4/21) * perimeter b = (8/21) * perimeter c = (9/21) * perimeter

Given that the perimeter of the triangle is 31.5 cm, we can substitute this value into the equations to find the lengths of the sides:

a = (4/21) * 31.5 cm b = (8/21) * 31.5 cm c = (9/21) * 31.5 cm

Now, let's calculate the lengths of the sides:

a = (4/21) * 31.5 cm = 6 cm b = (8/21) * 31.5 cm = 12 cm c = (9/21) * 31.5 cm = 13.5 cm

Therefore, the lengths of the sides of the triangle are 6 cm, 12 cm, and 13.5 cm.

Please note that the search results did not provide specific information about the given ratios and perimeter. The calculations provided above are based on the general method for finding the lengths of triangle sides when the ratios are given.