A novice golfer on the green takes three strokes to sink the ball. The successive displacements of the ball are d1 = 3.95 m to the north, d2 = 1.91 m northeast, and d3 = 1.16 m at 30.0° west of south (see the figure). Starting at the same initial point, an expert golfer could make the hole in what single displacement?
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