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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Two Women at the Pearly Gates

Two women are new arrivals at the pearly gates and are comparing stories on how they died.
Woman #1: I froze to death.
Woman #2: How horrible!
Woman #1: It wasn't so bad. After I quit shaking from the cold, I began to get warm and sleepy, and finally died a peaceful death. What about you?
Woman #2: I died of a massive heart attack. I suspected that my husband was cheating, so I came home early to catch him in the act. But instead, I found him all by himself in the den watching TV.
Woman #1: So what happened?
Woman #2: I was so sure there was another woman there somewhere that I started running all over the house looking. I ran up into the attic and searched, and down into the basement. Then I went through every closet and checked under all the beds. I kept this up until I had looked everywhere, and finally I became so exhausted that I just keeled over with a heart attack and died!
Woman #1: Too bad you didn't look in the freezer. We'd both still be alive.
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Mont Cenis Tunnel joined

In 1870, the mid-point rock wall was removed and joined the two bores completing the Mont Cenis Tunnel through the Alps. Workers who had been digging towards each other from both sides of the mountain met and shook hands. The previous day, a hole had been drilled through the remaining 4 feet of rock between them, and the workers from the two bores could hear each other. The two bores met with an accuracy of within 2 feet vertically and about 18 inches horizontally. By the next year, twin railroad tracks had been laid, and the Mont Cenis Tunnel was opened on 17 Sep 1871. Digging had started in 1857, tediously slowly by hand boring, until French engineer Germain Sommeiller, introduced industrial-scale pneumatic drills. Train service began 16 Oct 1871.*«[Image top: Mont Cenis Tunnel entrance arch; bottom: Sommeiller Boring Machines.]
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