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# Who Invented the Circle?

Since circular creations appear throughout nature, no man can be credited with the invention of the circle. From the cross-section of a plant stem to the moon and the sun, circles appear everywhere in nature.

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Ancient mathematicians, astronomers and engineers observed, measured and were inspired by the circle. Egyptian engineers used methods to compute areas and volumes for circles. As early as 1700 B.C., the Rhind papyrus records a method to find the area of a circular field. Written in 300 B.C., “Book 3” of Euclid's “Elements” deals with the characteristics of circles. Plato's “Seventh Letter” presents a detailed definition and explanation of the circle and the author’s conclusion that no one has ever seen a perfect circle, only approximations.

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Q:
## How Do You Find the Shaded Area of a Circle?

A: To find the shaded area of a circle, calculate the area of the full circle and multiply it by the fraction of the circle that is shaded. The fraction of th... Full Answer >Filed Under: -
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## What Is an Inscribed Polygon?

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## What Is a Circle's Eccentricity?

A: The eccentricity of a circle is zero. For a curved shape such as an ellipse, parabola or hyperbola, the eccentricity indicates how far away the shape is fr... Full Answer >Filed Under: -
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## What Is the Formula for the Area of a Circle?

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