6. The following ABCD piece of land is drawn on a map has the drawn graphical scale. It is required to: a) Complete the subdivisions values of the graphical scale b) Determine the real lengths of ABCD and its area D. 20 40 B 60 m

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A: given matrices are

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Q: 1. Use expansion along the 3rd row -4 3 1 2 -1 1 7 5

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