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Cards In A Circle (Posted on 2014-02-09) Difficulty: 3 of 5
What is the radius of the smallest circle that can enclose all 52 non-overlapping cards of an ordinary deck of playing cards? And what is the configuration of the cards?

Assume cards are perfect 5 by 7 rectangles.

No Solution Yet Submitted by Danish Ahmed Khan    
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Some Thoughts My reckoning Comment 1 of 1
10 across the centerline 9 above all vertical
Rows of 6, 4, 2 horizontal
Mirror below. 

r = sqrt(699.25) = 26.4433

My best so far. 

  Posted by Jer on 2014-02-11 00:51:23
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