physics

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In a city grid, each block on the east-west streets is 100 meters long. Each block on the north-south streets is 20 meters long. A walker walks 4 blocks west and then 4 blocks south. How much father did the walker travel than the actual distance between the start and end points?
A) 79m
B) 80m
C) 60m
D) 72m
E) 66m

  • physics -

    D)
    {4•100 +4•80} – sqrt(400² +80²) = 72 m

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