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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Herbert Friedman

Born 21 Jun 1916; died 9 Sep 2000 at age 84.American astronomer who made seminal contributions to the study of solar radiation. He joined the Naval Research Laboratory in 1940 and developed defense-related radiation detection devices during WW II. In 1949, he obtained the first scientific proof that X rays emanate from the sun. When he directed the firing into space of a V-2 rocket carrying a detecting instrument. Through rocket astronomy, he also produced the first ultraviolet map of celestial bodies, and gathered information for the theory that stars are being continuously formed, on space radiation affecting Earth and on the nature of gases in space. He also made fundamental advances in the application of x rays to material analysis.
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