Question

. Ломаная состоит из трех звеньев. Длина первого звена равна 4,3 см, что на 2,5 см меньше длины второго звена и на 1,8 см меньше длины третьего. Чему равна длина ломаной?

Answer 1

Ответ:

17,2см

Пошаговое объяснение:

1.)4,3см+2,5см=6,8(см) длина второго звена.

2.)4,3см+1,8см=6,1(см) длина третьего звена.

3.)4,3см+6,8см+6,1см=17,2(см) длина ломаной.

Answer 2

Problem Analysis

We are given a broken line consisting of three links. The length of the first link is 4.3 cm, which is 2.5 cm shorter than the second link and 1.8 cm shorter than the third link. We need to find the length of the broken line.

Solution

Let's denote the length of the second link as x cm and the length of the third link as y cm.

According to the given information, we have the following equations:

1. Length of the first link = 4.3 cm 2. Length of the first link + 2.5 cm = Length of the second link 3. Length of the first link + 1.8 cm = Length of the third link

We can solve these equations to find the values of x and y.

Calculation

Let's solve the equations:

1. Length of the first link = 4.3 cm 2. Length of the first link + 2.5 cm = Length of the second link 3. Length of the first link + 1.8 cm = Length of the third link

Substituting the values, we get:

1. 4.3 cm = 4.3 cm 2. 4.3 cm + 2.5 cm = x cm 3. 4.3 cm + 1.8 cm = y cm

Simplifying, we find:

2. x = 6.8 cm 3. y = 6.1 cm

Answer

The length of the broken line is equal to the sum of the lengths of the three links. Therefore, the length of the broken line is:

Length of the broken line = Length of the first link + Length of the second link + Length of the third link

Substituting the values, we get:

Length of the broken line = 4.3 cm + 6.8 cm + 6.1 cm = 17.2 cm

Therefore, the length of the broken line is 17.2 cm.