Question

Прямоугольный участок длинной 20 метров и шириной на 5 метров меньше. Длины обнесли забором.Столбы в котором находятся на расстоянии 5 метров друг от друга.Cколько потребуется столбов для забора?

Answer 1

20-5=15 (см)
(20+15)*2=70 (см) 
70/5=14 (ст.)

Answer 2

20-5=15(м) ширина участка
2(20+15)=70(м) периметр участка
70:5=14(ст) потребуется

Answer 3

Calculation of the Number of Posts for a Fence

To calculate the number of posts required for a fence surrounding a rectangular plot, we need to consider the dimensions of the plot and the spacing between the posts.

Given: - Length of the rectangular plot: 20 meters - Width of the rectangular plot: 5 meters less than the length

To determine the number of posts needed, we need to calculate the perimeter of the rectangular plot and divide it by the spacing between the posts.

Calculation Steps:

1. Calculate the width of the rectangular plot: - Width = Length - 5 meters

2. Calculate the perimeter of the rectangular plot: - Perimeter = 2 * (Length + Width)

3. Determine the spacing between the posts: - Spacing = 5 meters

4. Calculate the number of posts needed: - Number of Posts = Perimeter / Spacing

Let's perform the calculations:

1. Calculate the width of the rectangular plot: - Width = 20 meters - 5 meters = 15 meters

2. Calculate the perimeter of the rectangular plot: - Perimeter = 2 * (20 meters + 15 meters) = 70 meters

3. Determine the spacing between the posts: - Spacing = 5 meters

4. Calculate the number of posts needed: - Number of Posts = 70 meters / 5 meters = 14 posts

Therefore, you will need 14 posts to surround the rectangular plot with a length of 20 meters and a width of 15 meters.

Please note that the calculations assume that the posts are evenly spaced along the perimeter of the plot.