Results 1 to 3 of 3

Thread: Tricky triangle

  1. #1
    Platinum Lounger
    Join Date
    Nov 2001
    Location
    Melbourne, Victoria, Australia
    Posts
    5,016
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Tricky triangle

    If three identical coins, diameter D, are placed so that each touches the other two, there is a little triangle with curved sides formed in between them. What is the area of this triangle?

    Alan

  2. #2
    WS Lounge VIP sdckapr's Avatar
    Join Date
    Jul 2002
    Location
    Pittsburgh, Pennsylvania, USA
    Posts
    11,225
    Thanks
    14
    Thanked 342 Times in 335 Posts

    Re: Tricky triangle

    I get
    <span style="background-color: #FFFF00; color: #FFFF00; font-weight: bold">D

  3. #3
    Platinum Lounger
    Join Date
    Nov 2001
    Location
    Melbourne, Victoria, Australia
    Posts
    5,016
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Tricky triangle

    Correct (on both puzzles Steve. I thought I'd better get some simple geometry practice after making a meal out of Tony's puzzle! I was fuming <IMG SRC=http://members.aol.com/browrob549/emo/angry016.gif> when I saw the answer, especially since I then recognized it as one I'd seen before and solved "instantly" by the "obvious" method used.

    Alan

Posting Permissions

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