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Mathematics 7 Online
OpenStudy (twalt13):

Hey can anyone help me with this problem ? There is a wall of an unknown length, but there are four signs on the wall, A,B,C,D in order - with A and D being at the ends of the wall. The following lengths are true: AD=89m, AC=67m, BD=53m, AB=35m,CD=20m Approximate the length of the wall, minimizing the error.

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