Hands On History: Area Without Integration: Make Your Own Planimeter

  title={Hands On History: Area Without Integration: Make Your Own Planimeter},
  author={Robert L. Foote and Edward Sandifer},
Clay tablets from Mesopotamia and papyri from Egypt provide evidence that work with area has been part of mathematics since its early history. These Ancients knew how to find areas of squares, circles, triangles, trapezoids, and a number of other shapes for which we no longer have names. Like many other physical quantities, we usually measure area indirectly. That is, we measure something else, such as lengths, a radius, or angles. Then we do some calculations to find area based on appropriate… 
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