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how to find area of a circle?
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cintia005

by cintia005 at October 30, 2010

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Pi * R^2
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What_ok What_ok October 30, 2010

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Pi * R^2
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IAMTHEWALRUS IAMTHEWALRUS October 30, 2010

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Pi * R^2
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ChromeRedCat ChromeRedCat October 30, 2010

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the area of the circle is πr^2
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Car...los... Car...los... October 31, 2010

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Pi * r^2 or Diameter * Pi...same thing.
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fabianscorpio fabianscorpio October 31, 2010

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πr^2
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yankeekid yankeekid October 31, 2010

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it's pi times the square of the radius.
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bookworm_nerd bookworm_nerd October 31, 2010

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Why did Fabian get a thumbs up? r^2 is not the same as the diameter ...2r is!  Pi * diameter = the circumference of a circle, not the area.  The only formula for a circle's area is Pi * r^2.
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Bill201 Bill201 November 01, 2010

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πr^2  
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roboticman roboticman November 11, 2010

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