Question

Огород прямоугольной формы имеет ширину 18м,а длина на 2дм больше.он обнесён проволкой в 4 ряда.сколько м проволки нужно

Answer 1

Ширина-18м
длина-38м
Решение:
1.18+38=56
2.56*4=224
ответ: 224 м нужно . 

Answer 2

18м+20м =38м
38 ×4 =152м
Ответ:понадобится 152 М проволоки. 

Answer 3

Calculation of the Length of the Garden:

To calculate the length of the rectangular garden, we need to know the width and the fact that the length is 2 decimeters (dm) longer than the width.

Given that the width of the garden is 18 meters, we can calculate the length as follows:

Length = Width + 2 dm

Since 1 decimeter is equal to 0.1 meters, we can convert the 2 decimeters to meters:

2 dm = 2 * 0.1 m = 0.2 m

Therefore, the length of the garden is:

Length = 18 m + 0.2 m = 18.2 m

Calculation of the Total Length of Wire Needed:

The garden is surrounded by wire in 4 rows. To calculate the total length of wire needed, we need to know the perimeter of the garden.

The perimeter of a rectangle is calculated by adding the lengths of all its sides. In this case, the perimeter is equal to:

Perimeter = 2 * (Length + Width)

Substituting the values we have:

Perimeter = 2 * (18.2 m + 18 m)

Simplifying the equation:

Perimeter = 2 * 36.2 m

Perimeter = 72.4 m

Since the wire is placed in 4 rows, we need to multiply the perimeter by 4 to get the total length of wire needed:

Total Length of Wire = 72.4 m * 4

Total Length of Wire = 289.6 m

Therefore, 289.6 meters of wire are needed to surround the rectangular garden in 4 rows.