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2 people start off to work directly away from each other.they each walk for 4 kms then turn directly to their right and walk for another 3 kms.how far apart are they

  • math -

    make a sketch,
    the path of each will form the standard 3,4, 5 right-angled triangle, and each will have gone 5 km
    (3^2 + 4^2 = 5^2)
    and the line joining their end-positions will pass through their starting point

    So they are 10 km apart.

  • math -

    thanks,but what is 3^2,is it 3time 2 or square root of 3

  • math -

    3^2 = 3 squared = 9

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