Find the area of the shaded figure
[258] Find the area of the shaded figure - Express result to the accuracy of 3 decimal. - #brainteasers #math - Correct Answers: 24 - The first user who solved this task is Sanja Šabović
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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.
#brainteasers #math
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Drummer Problems

A musical director was having a lot of trouble with one drummer. He talked and talked and talked with the drummer, but his performance simply didn't improve.
Finally, before the whole orchestra, he said, "When a musician just can't handle his instrument and doesn't improve when given help, they take away the instrument, and give him two sticks, and make him a drummer."
A stage whisper was heard from the percussion section: "And if he can't handle even that, they take away one of his sticks and make him a conductor."

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Lord Joseph Lister

Born 5 Apr 1827; died 10 Feb 1912 at age 84. Lord Joseph Lister (Baron Lister, of Lyme Regis) was an English surgeon and medical scientist who was the founder of antiseptic medicine and a pioneer in preventive medicine. Influenced by Louis Pasteur's germ theory, Lister resolved to keep such organisms away from wounds. His book,On the Antiseptic Principle in the Practice of Surgery (1867), was the first treatise on the subject. While at the Royal Infirmary, Glasgow, Scotland, he introduced the use of carbolic acid (phenol) as a disinfectant used on bandages, ligatures, utensils, as well as for direct use on wounds and washing surgeon's hands. His first such surgery was conducted on 12 Aug 1865. Modern medical practice continues to follow Lister's principle that wounds must be kept free of bacteria, though sterilization has replaced mostantiseptic use. Lister was the first medical person raised to the peerage.«
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