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Two circles of radius 4 are externally tangent to each other and are internally tangent to a circle of radius 10 at points A and B.  Find the distance AB.

 

 Dec 13, 2021
 #1
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Find the distance AB.  

 

Along the circumference, or a straight line between them? 

 Dec 13, 2021
 #2
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AB = 13 1/3

 

Arc AB = 14.59455312   or    ≈ √213

 Dec 14, 2021

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