Results 1 to 6 of 6
  1. #1

    Join Date
    Jan 2006
    Location
    Back to skating!
    Age
    36
    Posts
    17,416
    vCash
    500
    Rep Power
    2755

    Mathematical riddle

    I don't know the answer yet, only that there is one.

    A person is in the forest. He knows that the edge of the forest at one point is exactly one kilometer away.
    What is the quickest way for him to find out where this spot is?

    One possibility is to go straight for one kilometer and then go in a perfect circle around his starting point.
    But there are quicker ways.
    Do you know one?

  2. #2
    Registered User
    Join Date
    Apr 2003
    Location
    Isla Tortuga, Thailand
    Age
    32
    Posts
    13,327
    vCash
    500
    Rep Power
    0
    Climb on a tree
    Check on his/her iPhone?

  3. #3

    Join Date
    Jan 2006
    Location
    Back to skating!
    Age
    36
    Posts
    17,416
    vCash
    500
    Rep Power
    2755
    Answers only from qualified persons, please, who don't make fun of mathematicians and their life-unrelated riddles.


  4. #4
    Registered User
    Join Date
    Apr 2003
    Location
    Isla Tortuga, Thailand
    Age
    32
    Posts
    13,327
    vCash
    500
    Rep Power
    0
    Hey, how do I know it's not one of those trick questions which requires a modern answer!!!

  5. #5
    Registered User
    Join Date
    Feb 2005
    Location
    Where banjos play.
    Age
    35
    Posts
    8,070
    vCash
    500
    Rep Power
    0
    Nevermind, that wouldn't work.

    I'd think there's something to do with measuring out to a spot on the edge, and then using some sort of triangular equation to get to the spot you want. That's just a guess though.

  6. #6

    Join Date
    Jan 2006
    Location
    Back to skating!
    Age
    36
    Posts
    17,416
    vCash
    500
    Rep Power
    2755
    Okay, I found one solution.
    Go to the edge of the imagined circle (=1), then go round the circle for 3/4 of the circle and then drop a perpendicular on the equilateral triangle that you can draw around the circle.

    This brings the route down from approximately 7.28 km to 6.7km.

    But I know that it can be done even shorter but cannot for the life of me figure it out!!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •