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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When I die

'When I die, I want to go peacefully like my grandfather did – in his sleep. Not yelling and screaming like the passengers in his car.'

Bob Monkhouse (1928-2003)

Picture: Rex Features

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Multi-satellite launch

In 1961, the first U.S. rocket to launch three satellites was launched from Cape Canaveral, Florida. The Thor-Able-Star rocket Omicron 1 carried 3 payloads, The first, Transit 4A weighed 1,175-pounds with an atomic radio-isotope powered battery of the Snap series. The battery (4.7-lb; about 5"x5") was placed at the top of the drum-shaped craft to provide 2.7 watts of electricity for 5-yrs. Injun (40-lb to gather data on the radiation belts); and Greb 3 (55-lb to gather data on X-ray radiation from the sun.) The previous year, a similar rocket launched a payload of 2 satellites on 22 Jun 1960. A launch of 8 satellites on one rocket took place 9 Mar 1965.
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