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The String Around the Cylinder

Math brain teasers require computations to solve.

 

Puzzle ID:#8264
Fun:*** (2.53)
Difficulty:*** (2.3)
Category:Math
Submitted By:higgo*gb**

 

 

 



A cylinder 48cm high has a circumference of 16cm. A string makes exactly 4 complete turns around the cylinder, while its two ends touch the cylinder's top and bottom (forming a spiral around the cylinder).

How long is the string in cm?

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