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A scout walks 4.5 km due east from camp, then turns left and walks 4.05 km along the arc of a circle centered at the campsite, and finally walks 2.25 km directly toward the camp.
(a) How far is the scout from camp at the end of his walk?
(b) In what direction is the scout's position relative to the campsite?
(c) What is the ratio of the final magnitude of the displacement to the total distance walked?
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