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Three circles on sphere (Posted on 2021-01-27) Difficulty: 3 of 5
Three circles of radius a are drawn on the surface of a sphere of radius r. Each pair of circles touches externally and the three circles all lie in one hemisphere. Find the radius of a circle on the surface of the sphere which touches all three circles.

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
re: an observationThe Home Dekor2021-01-28 11:20:04
Some Thoughtsan observationCharlie2021-01-28 06:55:14
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