Area Of Irregular Figures

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Illustration of an irregular figure. To find area, divide round curved portions in small steps with dividers ; add in any straight pieces. “Divide into narrow strips; measure their mid-ordinates. Then - Area = aver. mid-ordinate X length.


Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 47


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