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Math Help - Geometry question

  1. #1
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    Geometry question

    Hello,

    I'd like to start by saying I'm not that good in math, in fact, I know math as much as I know nuclear physics. So please be gentle.

    I'm trying to register at a forum and their verification system (to know whether you're a human or a bot) is pretty challenging.



    To register, you need to solve this simple math problem.
    a = 2
    b = 18
    What is c ? round your answer to one significant digit (i.e., if the result is 6.741 write 6.7 as your answer).
    I really appreciate the help and sorry if this is in the wrong section.
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  2. #2
    MHF Contributor Siron's Avatar
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    Re: Geometry question

    Do you know the proposition of Phytagoras? Never heard of a^2+b^2=c^2?
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  3. #3
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    Re: Geometry question

    Thanks, that solved the problem.
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  4. #4
    MHF Contributor Siron's Avatar
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    Re: Geometry question

    You're welcome!
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