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gmt prep q

This topic has 1 member reply
yvonne12 Master | Next Rank: 500 Posts Default Avatar
Joined
07 Feb 2007
Posted:
144 messages

gmt prep q

Post Wed Mar 07, 2007 8:57 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    if the area of the square region is 16, what is teharea of the circular region?


    ans. 8 pi

    pleaase explain

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    ssiva Junior | Next Rank: 30 Posts Default Avatar
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    Post Wed Mar 07, 2007 10:20 am
    I am assuming the square is incribed in the cirle.

    Since the area of the square is 16. Each side is 4. Hence diagonal is
    4*(root 2).

    Diagonal of the sqaure is the diameter of the circle. Hence radius is 2*( root 2).

    Hence area of circle is pi * square of ( 2*root2) = 8pi

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