Area of Circle/Proof 7
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Theorem
The area $A$ of a circle is given by:
- $A = \pi r^2$
where $r$ is the radius of the circle.
Proof
By the method of exhaustion:
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Historical Note
The technique of finding the Area of Circle by means of the method of exhaustion was devised by Archimedes of Syracuse.
Sources
- 1977: K.G. Binmore: Mathematical Analysis: A Straightforward Approach ... (previous) ... (next): $\S 2$: Continuum Property: $\S 2.1$: Achilles and the tortoise