Math! pp 77-90 | Cite as

The length of the circle

  • Serge Lang


The next lecture was given to an 8th grade class in Paris in Spring 1983. We did the length of the circle, starting with the formula for the area. This method can be used instead of the method followed in “What is pi?” and has the advantage that it adapts easily to find the area of the sphere from the volume of the ball.


Small Circle Small Disc Rote Memorization Conceptual Context Small Circumference 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • Serge Lang
    • 1
  1. 1.Department of MathematicsYale UniversityNew HavenUSA

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