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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Who Should Make the Coffee?

A man and his wife were having an argument about who should brew the coffee each morning. The wife said, "You should do it, because you get up first, and then we don't have to wait as long to get our coffee."The husband said, "You are in charge of the cooking around here so you should do it, because that is your job, and I can just wait for my coffee."Wife replies, "No, you should do it, and besides it says in the Bible that the man should do the coffee."Husband replies, "I can't believe that! Show me."So she fetched the Bible, and opened the New Testament and showed him at the top of several pages, that it indeed says, "HEBREWS."
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Food cans

In 1825, the first U.S. patent for food storage in cans - to "preserve animal substances in tin" - was issued to Ezra Daggett and his nephew Thomas Kensett of New York City where they canned salmon, oysters and lobsters since introducing the method in 1819. Tin cans had been used by the military and explorers in Europe since 1813, but their development did not start until after the Civil War.
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