area of a circle sara&lisa
TRANSCRIPT
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Why Does Circle Area Formula Work?
By Lisa, Sara6th March, 2009
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Problem
• The problem is, why does circle area formula work?
• Area = πr2 ?
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Process
• The process for figuring out if the circle area formula works, started all by cutting out mini pizza pieces of a circle and then arranging and gluing them in a sort of rectangle.
• Then the circle area formula was tested if it worked.
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Challenges
• The challenges were, making a perfect rectangle, cutting out perfect mini pizza pieces, understanding the questions and directions and understanding the formulas for area of a circle.
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Solution
• The solution was: