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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The Auction

One day a man went to an auction. While there, he bid on a parrot. He really wanted this bird, so he got caught up in the bidding. He kept on bidding, but kept getting outbid, so he bid higher and higher and higher. Finally, after he bid way more than he intended, he won the bid - the parrot was his at last!
As he was paying for the parrot, he said to the auctioneer, "I sure hope this parrot can talk. I would hate to have paid this much for it, only to find out that he can't talk!"
"Don't worry," said the auctioneer, "He can talk. Who do you think kept bidding against you?"

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Traffic lights

In 1914, a lighting ceremony was held for the first electric traffic lights used to control flow of different streams of traffic at the intersection of Euclid Ave. and E. 105th St. in Cleveland, Ohio. The traffic signals were red and green lights on street-corner poles, wired to a manually operated switch housed inside a control booth beside the road. The switch design prevented conflicting signals. A bell warned the drivers of colour changes. The installation by the American Traffic Signal Co. was modelled after a system patented by James Hoge (U.S. No. 1,251,666). The first traffic control light used a gas-lit lantern, in London, England (10 Dec 1868).«
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