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one afternoon a couple walks 7/8 of the way around a circular lake, the radius of...

one afternoon a couple walks 7/8 of the way around a circular lake, the radius of which is 1.65km. they start at the west side of the lake and the head die south to begin with.
a. what is the distance they travelled?
b. what are the magnitude and direction (relative to due east) of the couples displacment?

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genius_generous answered 2 years ago
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