Poles and Fence
A farmer built a fence around his cows, in a square shaped region. He used 27 fence poles on each side of the square.
How many poles did he need altogether ?
How many poles did he need altogether ?
Labels: thinktank
posted by Rajesh Lal at
9:01 PM
11 Comments:
104 fence poles of course.
I think you meant "post" not poles.
Each corner of the fence, there's a "corner" post. So the fence would be composed of 25 "side" post and two corner post. In all, there would be 25 * 4 side posts plus four corner post. That would be 104 posts.
yes i agree with you Ragknot.Unless it's some stupid trick question where one side of the square is against a hedge or somthing.
It could be a trick question...maybe the 27 on each isnt including the corners...therefore 4*27=104 plus the four corners is 108
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Thrym that is a math fail 27X4=108 then adding four gives you 112...is that what you ment? Haha do you own a calculator? If yes you should use it
so sue me... i didnt actually think about the calculation, but yes thats what i meant
The answer is;
(1*27)+(2*26)+(1*25) = 104
or,
(2*27)+(2*25) = 104
110 because he ruined some of them
110 because he ruined some of them
4, to help him erect the fence.
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