area of a circle sara&lisa
TRANSCRIPT
Why Does Circle Area Formula Work?
By Lisa, Sara6th March, 2009
Problem
• The problem is, why does circle area formula work?
• Area = πr2 ?
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.
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.
Solution
• The solution was: