Question

Решите задачу первая сторона тряугольника равна 4 целых 3/10 см а вторая на 2 целых 1/10 см больше чем первая найди длину третьей стороны если периметр равен 16 см вырази ответ в сантиметрах

Answer 1

1) 4 3/10 + 2 1/10 = 6 4/10 (см) - 2 сторона.
2) 6 4/10 + 4 3/10 = 10 7/10 (см) - обе стороны.
3) 16 - 10 7/10 = 5 3/10 (см) - 3 сторона.
5 3/10 см = 5,3 см

Answer 2

Problem Analysis

We are given the lengths of two sides of a triangle and the perimeter of the triangle. We need to find the length of the third side. Let's denote the length of the first side as a and the length of the second side as b. We are also given that the second side is 2 and 1/10 cm longer than the first side. The perimeter of the triangle is given as 16 cm.

Solution

To find the length of the third side, we can use the formula for the perimeter of a triangle:

Perimeter = a + b + c

We know the values of a, b, and the perimeter. We can substitute these values into the equation and solve for c.

Calculation

Let's calculate the length of the third side using the given information.

Given: - Length of the first side (a) = 4 and 3/10 cm - Length of the second side (b) = 2 and 1/10 cm - Perimeter = 16 cm

Substituting the values into the equation:

16 = (4 and 3/10) + (2 and 1/10) + c

To simplify the calculation, we can convert the mixed fractions to improper fractions:

16 = (43/10) + (21/10) + c

Now, we can add the fractions:

16 = (43 + 21)/10 + c

16 = 64/10 + c

To add the fractions, we need a common denominator. The common denominator for 10 and 1 is 10. Let's convert 16 to a fraction with a denominator of 10:

16 = 160/10

Now, we can add the fractions:

160/10 = 64/10 + c

To isolate c, we can subtract 64/10 from both sides:

160/10 - 64/10 = c

96/10 = c

Simplifying the fraction:

96/10 = 9 and 6/10

Therefore, the length of the third side (c) is 9 and 6/10 cm.

Answer

The length of the third side of the triangle is 9 and 6/10 cm.