A figure bounded by three semicircles on the same line was called an arbelos, by Archimedes (ca. 287-212 B.C.). Draw an arbelos and find a formula for its area.
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Step 1:** The area of the full shape (if they were complete circles) would be: \[ \text{Area} = \pi R^2 - \pi R_1^2 - \pi R_2^2 \] ** Show more…
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