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Find the area of the shaded region

Find the area of the shaded region accurate up to 3 decimal places. (A=?, a=2389, b=1389)

Correct answers: 23

The first user who solved this task is Sanja Šabović.

#brainteasers #math #riddles

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Tied spaghetti

I tied all of my spaghetti together whilst I was drunk last night.

I ended up skipping dinner.

Found it on www.subsim.com Radio Room forum, originally posted by Jimbuna on January the 17th, 2014

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Auguste-Henri Forel

Died 27 Jul 1931 at age 82 (born 1 Sep 1848).Swiss neuroanatomist, psychiatrist, and entomologist known for his investigations of brain structure. Professor of Psychiatry at the University of Zürich and director of the world-famous Burghölzli Hospital, Forel was Adolf Meyer's teacher. Interested in ants from childhood, he became engrossed in the psychology of ants and contributed greatly to the study of their social instincts, leading to his magnum opus in 5 volumes of The Social World of the Ants (1921-23). He was the first to describe the phenomena of parabiosis and lestobiosis in ants.

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