SOLUTION: Thomas is putting a fence around his field. His field is 360 yd long and 225 yd wide. He wants to put a fence post every 3 yd. how many fence posts will Thomas need?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Thomas is putting a fence around his field. His field is 360 yd long and 225 yd wide. He wants to put a fence post every 3 yd. how many fence posts will Thomas need?      Log On

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Question 901309: Thomas is putting a fence around his field. His field is 360 yd long and 225 yd wide. He wants to put a fence post every 3 yd. how many fence posts will Thomas need?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The perimeter is:
+p+=+2%2A360+%2B+2%2A225+
+p+=+720+%2B+450+
+p+=+1170+
+1170+%2F+3+=+390+
( note that starting post is the same
as the ending post )
There are 390 posts
-------------------
check:
Start at a corner +1+ post
+360%2F3+=+120+ to the next corner
+225+%2F+3+=+75+ to next corner
+360%2F3+=+120+ to next corner
+225+%2F+3+-+1+=+74+ to post
before the starting corner
+1+%2B+120+%2B+75+%2B+120+%2B+74+=+390+