Circle Reflection Max & Julius

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Circle Reflection Max & Julius

  1. 1. Why does the formula for the area of a circle work? By Julius Wright and Max Hoefler
  2. 2. Area of a circle <ul><li>It is hard to prove that the formula for the area works because a circle has no sides. </li></ul>
  3. 3. Process <ul><li>First one half of the circle was colored blue. Then the circle was cut into 24 even triangles. </li></ul><ul><li>Then the triangles were glued on a piece of paper in a rectangular shape. </li></ul>
  4. 4. Challenges <ul><li>The process is hard but hopefully you will understand it after slide 5. It was also challenging to put what we found out into formulas. </li></ul>
  5. 5. Solution <ul><li>A= Length*width </li></ul><ul><li>Circumference/2 * radius </li></ul><ul><li>PI* Diameter/2 * radius </li></ul><ul><li>Pi*2*radius/2 * radius </li></ul><ul><li>Pi*r2 </li></ul>
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