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Mathematics, 04.03.2021 06:00 blackberri9675

A rectangular rug has a central rectangular area in a gray geometric pattern surrounded (on all four sides) by a red uniform border of equal width. The central geometric pattern is 4 metres by 6 metres.
The total area of the rug, including the gray area plus the red border, is 80 m². Find the width of the red
border.

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