Question

Под огород отвели прямоугольный участок земли,длина которого 40 м,а ширина 35 м.Он обнесен со всех сторон двумя рядами досок,каждая длиной 5м.Сколько потребовалось досок?

Answer 1

Ответ:

60

Пошаговое объяснение:

Периметр участка 2*(40+35) = 150

Досок на один ряд: $\frac{150}{5} = 30$

Доски в два ряда, поэтому умножаем на 2: 30*2 = 60

============      

Не забывайте нажать "Спасибо", поставить оценку и, если ответ удовлетворил, то выберите его как "Лучший"    

Бодрого настроения и добра!      

Успехов в учебе!

Answer 2

Ответ:

1) P=(40+35)*2=75*2=150  м периметр участка .

2) 150:5=30 досок из одного ряда.

3) 30*2=60 досок потребовалось.

Пошаговое объяснение:

Answer 3

The user has provided information in Russian, and you've requested a translation. Here's the translation of the user's question into English:

"Answer in detail. A rectangular plot of land was allocated for a garden, the length of which is 40 meters, and the width is 35 meters. It is surrounded on all sides by two rows of boards, each 5 meters long. How many boards were needed?"

To answer the question, you can calculate the perimeter of the rectangular garden to determine how many boards are required to enclose it. The perimeter is calculated as follows:

Perimeter = 2 * (Length + Width)

Perimeter = 2 * (40 meters + 35 meters)

Perimeter = 2 * 75 meters

Perimeter = 150 meters

Since there are two rows of boards, you'll need to double the perimeter to account for both sides:

Total length of boards = 2 * Perimeter

Total length of boards = 2 * 150 meters

Total length of boards = 300 meters

Each board is 5 meters long, so to find out how many boards are needed, divide the total length by the length of each board:

Number of boards needed = Total length of boards / Length of each board

Number of boards needed = 300 meters / 5 meters

Number of boards needed = 60 boards

You will need 60 boards to surround the rectangular garden with two rows of boards.