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A plane flies due east for 120 km from airport a to airport b it then flies due north for 280 km to airport c finally it flies directly back to airport a calculate the direct distance from airport to airport a give your answer to the nearest kilometre

  • Math -

    If the distance from a to c is d, then

    d^2 = 120^2 + 280^2
    d = 40√58

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