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Find the area of the shaded figure

Express result to the accuracy of 3 decimal.

Correct answers: 24

The first user who solved this task is Sanja Šabović.

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Take Your Kid To Work Day

An 8 year old girl went to the office with her father on 'Take your kid to work Day'.
As they walked round the office she started crying and getting cranky.
Her father asked what was wrong.
As the staff gathered round she sobbed loudly, "Daddy, where are all the clowns you said you worked with?"

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Efim Isaakovich Zelmanov

Born 7 Sep 1955.Russian mathematician who was awarded the 1994 Fields Medal for his work on combinatorial problems in nonassociative algebra and group theory and particularly his solution of the Restricted Burnside problem. His Ph.D. (1980) Ph.D. thesis was on nonassociative algebra, wherein his treatment extending results from the classical theory of finite dimensional Jordan algebras to infinite dimensional Jordan algebras. In 1887, he showed that the Engel identity for Lie algebras implies nilpotence, in the previously unsolved case of infinite dimensions. The Restricted Burnside problem that he solved was a narrower condition arising out of Burnside's 1902 question whether a finitely generated group in which every element has finite order, is finite.«

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