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We inscribed circles in a larger circle. Circles of the same color are congruent. Given the radius of one of the blue circles as 5, what is the radius of the pink circles? 

 

 Jun 8, 2020
 #1
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I think the radius is 2.5

I am only 11 so I am not sure, it might help!

 Jun 8, 2020
 #4
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The answer is     (11-1) / (11-8)  smiley

Guest Jun 8, 2020
 #2
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since the diameter of the big circle is 20 then  get 20/3 so the diameter of the circle is 20/3 and the radius is 10/3

 Jun 8, 2020
 #3
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This equation proves your point:     sqrt (5+x)2 = sqrt [ 52 + (10-x)2smiley

Guest Jun 8, 2020

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