Find the area of the black region
[2917] Find the area of the black region - Find the area of the black region accurate up to 3 decimal places. (A=?, a=20, b=10) - #brainteasers #math #riddles - Correct Answers: 39 - The first user who solved this task is Sanja Šabović
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Find the area of the black region

Find the area of the black region accurate up to 3 decimal places. (A=?, a=20, b=10)
Correct answers: 39
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Thomas H. Weller

Died 23 Aug 2008 at age 93 (born 15 Jun 1915).Thomas Huckle Weller was an American physician, microbiologist and virologist who was a co-recipient of the Nobel Prize for Physiology or Medicine in 1954 (which shared with John Enders and Frederick Robbins) for the successful cultivation of poliomyelitis virus in tissue cultures. This made it possible to study the virus “in the test tube,” a procedure that led to the development of polio vaccines.
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