Find the area of the shaded regionFind the area of the shaded region accurate up to 3 decimal places. (A=?, r=1389)
Correct answers: 39
The first user who solved this task is Dejan Mratinkovic.
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U.S. inland radio facsimile transmissionIn 1923, the first radio facsimile transmission made in the U.S. to a distant point sent a photgraphic image from the U.S. Navy Radio Station NOF, at Anacostia, D.C., to the Evening Bulletin in Philadelphia, Pennsylvania. A few months earlier, on 3 Oct 1922, photographs had been sent as a facsimile transmission over a city telephone line within Washington D.C., using a photographic plate to record the signal received at the radio station NOF, attended by Commander Albert Hoyt Taaylor, U.S.N.«*