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Area Of Circle Proof

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Area of a circle - proof

Area of a circle - proof

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Area Of Circle   Proof Area Of Circle Proof Presentation Transcript

  • Area of a circle =  R 2 ( Proof )
  • Rearrange the wedges to make a rectangle
  • The more wedges there are, the better. Rearrange the wedges to make a rectangle
  • Area of a rectangle = width x height Half a circumference Half a diameter
  • Area of a rectangle = width x height = ( Half diameter ) x ( Half circumference ) Half a circumference Half a diameter
  • Area of a rectangle = width x height = ( Half diameter ) x ( Half circumference ) = ½ D x ½ (  D) Half a circumference Half a diameter
  • Area of a rectangle = width x height = ( Half diameter ) x ( Half circumference ) = ½ D x ½ (  D) =  D 2 / 4 Half a circumference Half a diameter
  • Area of a rectangle = width x height = ( Half diameter ) x ( Half circumference ) = ½ D x ½ (  D) =  D 2 / 4 =  ( D / 2 ) 2 Half a circumference Half a diameter
  • Area of a rectangle = width x height = ( Half diameter ) x ( Half circumference ) = ½ D x ½ (  D) =  D 2 / 4 =  ( D / 2 ) 2 =  R 2 Half a circumference Half a diameter
  • END