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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Unlocking Your Car

Two blondes were recently observed in a parking lot trying to unlock the door of their Mercedes with a coat hanger. Here is their dialogue:
Blonde One: I can't seem to get this door unlocked!
Blonde Two: Well, you'd better hurry up and try harder! it's starting to rain, and the top is down!
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James W. Alexander

Died 23 Sep 1971 at age 83 (born 19 Sep 1888).James Waddell Alexander was an American mathematician who founded the branch of mathematics originally known as analysis situs, now called topology. In 1912, he joined the faculty of the mathematics department at Princeton. Soon after, Alexander generalised the Jordan curve theorem and, in 1928, he discovered the Alexander polynomial which is much used in knot theory.
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