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Find the area of the shaded ...

Find the area of the shaded octagon (A=?, a=1999) and express result to the accuracy of 3 decimal.

Correct answers: 22

The first user who solved this task is Allen Wager.

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Hobbled gynecologist

Hear about the hobbled gynecologist, who couldn't walk anywhere without crotches?

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Heart movie

In 1951, the first motion picture in the U.S. of the inside of a living heart was shown at the clinical session of the New York Academy of Medicine Post Graduate Fortnightly held at Montefiore Hospital, New York City, where the film was made. A dog's heart was the subject of the 9-1/2 minute colour film, which showed the opening and closing of the mitral valve. This structure was of interest because it is often crippled by rheumatic fever. Entitled A Cinematographic Study of the Function of the Mitral Valve in Situ, the film was the result of work by Dr. Elliott S. Hurwitt, Dr. Adrian Kantrowitz and photography by Anatol Herskovitz.

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