Results 1 to 2 of 2

Math Help - problem

  1. #1
    Newbie
    Joined
    Jun 2013
    From
    asdasd
    Posts
    22

    problem

    problem :

    dependence between area of circle to area of square around this circle ( 2 * ray of circle is side of square ) is 2 / pi, however the dependence of sector of this square ( quarter ) to sector of this circle ( quarter ) made on the ray of circle isnt correct with
    2 / pi

    r^2 / ( pi * r^2 / 4 ) != (nie równa się) 2 / pi
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member

    Joined
    May 2006
    From
    Lexington, MA (USA)
    Posts
    11,735
    Thanks
    642

    Re: problem

    Hello, razera!

    Dependence between area of circle to area of square around this circle is 2 / pi. . Not true
    However, the dependence of sector of this square (quarter) to sector of this circle (quarter) isn't correct with 2 / pi.

    The circle has radius r=1.
    Its area is:- \pi r^2 \,=\,\pi(1^2) \,=\,{\color{blue}\pi}.

    The side of the square is s =2.
    Its area is:- s^2 \,=\, 2^2 \,=\,{\color{blue}4}.

    Ratio of areas: . \dfrac{\text{square}}{\text{circle}} \:=\:\frac{4}{\pi}
    Follow Math Help Forum on Facebook and Google+

Search Tags


/mathhelpforum @mathhelpforum