This week's maths problem

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Problem of the week

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On Friday of each week we will post a new maths challenge.
You may submit your solution by the following Thursday.
Each problem contains two different levels of difficulty. You will be awarded from 2 to 12 points for a full answer.
Each series contains 12 problems before the stage winner is determined.
Your score will be published here.

In each series we will give away 3 books as prices. The prices will be drawn by lot among the best ten participants of the series. The books are kindly sponsored by Buchdienst Rattei of Chemnitz.

Suggestions for problems are welcome.

Deadline is 2st of September 2021.


German version - Italian version - French version - Spanish version  Hungarian Version Russian version  --> 中文/Chinese <--

Series 57

problem 682

 

„I'm preparing a rope trick. Here you can see my preparations. One wooden disc (radius = 1m) and one thin red rope. The length of the rope is one meter longer than the perimeter of the disc.“, Mike told Bernd.

682

On the left side the rope is evenly taut around the disc.
How big is the distance between the rope an the center of the disc? 2 blue points
On the right side the disc was hanged on the hook H using the red rope. How big is the distance between point H and the center of the disc? 6 red points


 

-> Enigma <--

https://www.schulmodell.eu/images/stories/mathe/horst/raetsel.php

 


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You can also send a paper copy of your solution as long as it is postmarked on or before the deadline.
adress:
Thomas Jahre
Stollberger Strasse 25
09119 Chemnitz
Germany


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post address:

Thomas Jahre
Chemnitzer Schulmodell
Stollberger Straße 25
09119 Chemnitz
Deutschland/Germany
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