Find the area of the shaded figure
Express result to the accuracy of 2 decimal.Correct answers: 69
The first user who solved this task is Djordje Timotijevic.
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Cross-Channel balloon flightIn 1785, Frenchman Jean Pierre Blanchard and American scientist and physician John Jeffries made the first air crossing of the English Channel from England to France in a hot-air balloon - the first international flight. This was the second of two balloon flights Jeffries financed. To accompany him, Jeffries chose Blanchard for his prior experience in balloon flight. The voyage across the Channel was successful, though not without difficulty, because to maintain height they were forced to jettison everything in the basket, including rope and most of their clothes. Their previous flight took place on 30 Nov 1784, in London, for the purpose of taking scientific and meteorological measurements.[Image: Blanchard (L) and Jeffries (R).] |