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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Two Sets of Tonsils?

A young man approached his family physician and said, "Doc, I'm afraid you'll have to remove my wife's tonsils one of these days."

"My good man," replied the doctor, "I removed them six years ago. Did you ever hear of a woman having two sets of tonsils?"

"No," the husband retorted, "but you've heard of a man having two wives, haven't you?"

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Jacques Babinet

Died 21 Oct 1872 at age 78 (born 5 Mar 1794).French physicist who was the first to proposed the definition of the unit of length in terms of the wavelength of a spectral line. The red line in the spectrum of cadmium was chosen, and the angstrom was redefined as a fraction of this value.. He established a principle in diffraction theory (1837) that is named after him. The Babinet compensator was his invention to measure the polarization of light.«
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