SOLUTION: A rancher wants to build a fence for a square lot with dimensions of 50 yd by 50 yd. He wants to install a fence post every 5 yd with a post at each corner. How many fence post wil

Question 159098: A rancher wants to build a fence for a square lot with dimensions of 50 yd by 50 yd. He wants to install a fence post every 5 yd with a post at each corner. How many fence post will he need?
i dont know how to do this
thx
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the perimeter of the 50x50 square.
Divide the total perimeter by 5 (for every 5 feet), this will give you the total number of posts.
A square of side s has a perimeter of 4s.
In your case P=4(50)=200.
So you have 200 ft of border, every 5 ft a post.

40 posts are needed.

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