how many posts will be needed to fence a yard 25 m long and 5 m wide if the posts are 2 m apart?

total fence: 2(25+5) = 60

60/2 = 30

To find the number of posts needed to fence a yard, we first need to calculate the perimeter of the yard. The perimeter is the measurement around the yard, which can be found by adding up all the sides.

Given that the yard is 25 meters long and 5 meters wide, we can calculate the perimeter by using the formula for the perimeter of a rectangle: P = 2L + 2W, where P is the perimeter, L is the length, and W is the width.

P = 2(25) + 2(5) = 50 + 10 = 60 meters

Now, we know that the posts are placed 2 meters apart. This means that for every 2-meter interval, there will be one post. To find the number of posts needed, we can divide the perimeter by the spacing between the posts.

Number of posts = Perimeter / Spacing between posts

Number of posts = 60 meters / 2 meters = 30 posts

Therefore, you will need 30 posts to fence a yard that is 25 meters long and 5 meters wide if the posts are placed 2 meters apart.