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: 29 - 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: 29
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Juston McKinney: Parking Tickets in New York

The first ticket I got in Manhattan I thought was a misprint. Im like, No, this has got to be a mistake. You put a quarter in the meter out there and it runs out, its a $55 fine. Thats a little excessive. Now, I could see it if you parked in a handicapped persons living room, but not for the meter running out. It goes from 25 cents to $55. Thats a 22,000% increase.
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Charles Sumner Tainter

Born 25 Apr 1854; died 20 Apr 1940 at age 85.American inventor of various sound-recording instruments, including the photophone (1880, with Alexander Graham Bell), an instrument for transmitting sound to a distance through the agency of light, using sensitive selenium cells. He also developed the Graphophone (1881, patented 1886; with Chichester A. Bell, a cousin of Alexander Graham Bell). This greatly improved on the tinfoil surface and rigid stylus then used by Thomas Edison. Tainter devising a wax-coated cardboard cylinder and a flexible recording stylus which incised the grooves (rather than embossing) to achieve better reproduction, making the phonograph and the dictagraph commercially possible.
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