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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.

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Willy Messerschmitt

Born 26 Jun 1898; died 15 Sep 1978 at age 80.German aircraft engineer and designer, born Frankfurt-am-Main. Messerschmitt. He studied at the Munich Institute of Technology, and in 1926 joined the Bayerische Flugzeugwerke as its chief designer and engineer. In 1938 the company became the Messerschmitt-Aitken-Gesellschaft, producing military aircraft. His Me109 set a world speed record in 1939, and during World War 2 he supplied the Luftwaffe with its foremost types of combat aircraft. In 1944 he produced the Me262 fighter, the first jet plane flown in combat.

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