The Limited Times

Now you can see non-English news...

The round is in the square


There are three colored circle segments in a triangle. What is the relationship between the areas? Whoever knows can win a book.

Enlarge image


Three weeks ago I gave you my new book "Blind Date with Two Strangers" to a raffle.

I received more than 1500 emails about the racing bike puzzle, there was one winner and four winners.

This week you have another chance - and I think the task is a little easier than it was three weeks ago.

A semicircle and two circle segments are drawn in a triangle - see sketch above.

The radius of the semicircle is half the size of the radius of the two yellow circle segments.

The triangle is right angled.

The two yellow segments have a common area of ​​128. How big is the dark red colored area of ​​the semicircle?

Please send me your solution by email to - with the subject line »semicircle«.

For the raffle I do not need any further information apart from your e-mail address and the solution.

I will only use your data to contact you if you were randomly drawn as the winner and your solution is correct.

Good luck!

If you missed a puzzle from the past few weeks, here are the ten most recent episodes:

  • The magic number triangle

  • Built on a gap

  • The racing bike clique

  • A king on the run

  • The carpet repair

  • Brand diversity at Swiss Post

  • Is Dieter the thief?

  • One circle, two points

  • Guess the numbers - but clever

  • The legendary great-aunt

  • Cleaning orgy in the restaurant kitchen

Source: spiegel

All business articles on 2021-05-17

You may like

News/Politics 2021-04-12T14:41:04.063Z
Business 2021-06-14T20:02:21.924Z

Trends 24h

Business 2021-06-23T22:59:15.458Z


© Communities 2019 - Privacy