Find the length of red arc AB
[2605] Find the length of red arc AB - Find the length of red arc AB (r1=1, r2=2). Express result to the accuracy of 3 decimal. - #brainteasers #math - Correct Answers: 43 - The first user who solved this task is Roxana zavari
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Find the length of red arc AB

Find the length of red arc AB (r1=1, r2=2). Express result to the accuracy of 3 decimal.
Correct answers: 43
The first user who solved this task is Roxana zavari.
#brainteasers #math
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Earth Day Joke

April 22nd is Earth Day! Find a joke about it!

Two planets were talking to each other. One said, "I've been feeling really sick lately."
The other asked, "What's wrong?"
The first planet replied, "I've got a bad case of humans."
The second planet said,
"Oh, I had that once, but don't worry - it doesn't last long!"

#earthday

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U.S. Patent No. 1

In 1836, John Ruggles of Thomaston, Maine received patent Number 1 from the U.S. Patent Office, under a new system for numbering patents. Before Ruggles, there had been 9,957 non-numbered patents issued. Ruggles received his patent for a traction wheel used in locomotive steam engines. He was Chairman of the Committee on Patents of the U.S. Senate, and was instrumental in patent law reform. However, in 1838, a Senate select committee investigated corruption charges against Senator Ruggles relating to a patent application.
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