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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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Take Your Kid To Work Day

An 8 year old girl went to the office with her father on 'Take your kid to work Day'.
As they walked round the office she started crying and getting cranky.
Her father asked what was wrong.
As the staff gathered round she sobbed loudly, "Daddy, where are all the clowns you said you worked with?"

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Joseph Needham

Born 9 Dec 1900; died 24 Mar 1995 at age 94. (Noël) Joseph (Terence Montgomery) Needham was an English biochemist, embryologist, and historian of science who wrote and edited the landmark history Science and Civilisation in China, a remarkable multivolume study of nearly every branch of Chinese medicine, science, and technology over some 25 centuries. As head of the British Scientific Mission in China (1942-46) he worked to assure adequate liaison between Chinese scientists and technologists and their colleagues in the West. As an historian of science and technology he wanted to break through the parochial, Europe-centred views of most of his colleagues by disclosing the achievements of traditional China and the contributions made by China leading up to the scientific revolution.

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