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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Arrived safely

Mr. Johnson, a businessman from Wisconsin, went on a business trip to Louisiana. He immediately sent an e-mail back home to his wife, Jennifer to let her know he had arrived safely.

Unfortunately, he miss typed a letter and the e-mail ended up going to a Mrs. Joan Johnson, the wife of a preacher who had just passed away.

The preacher's wife took one look at the e-mail and promptly fainted. When she was finally revived, she nervously pointed to the message, which read: "Arrived safely, but it sure is hot down here."

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Herbert Calhoun Reed

Born 16 Oct 1873; died 25 Jul 1940 at age 66.American chemist who was noted internationally as an analytical and consulting chemist to the leather industry and allied trades. From 1 Jan 1895 he spent 15 years as a chemist with the Stamford Mfg. Co., before establishing his own laboratory in New York City. He was one of nine leather industry chemists who founded the American Leather Chemists Association (22 Nov 1903) to establish reliable analytical methods for the commercial quality of materials used in the manufacture of leather, and to introduce scientific methods of tannery plant control. It was the outcome of a decade when a small number of chemists with a commercial interest in the product had worked to establish reliable analytical methods for analyzing the tanning extracts used in the industry, and to introduce scientific methods of tannery plant control. They devised a method of measuring the amount of tanning material absorbed by dried, ground hide. However, these formative years were still characterised by bitter disputes and wrangling among the chemists. Reed served as its secretary, and was its third president for one year. As one of the leading tanning chemists of the U.S., he wrote extensively on technical topics.«[Image: current logo of the American Leather Chemists Association (ALCA).]
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