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a building in a city has a rectangular base. the lenght of the base measures 70 ft less than twice the width. the perimeter of this base is 820 ft.

2 answers

P = 2L + 2W

820 = 2(W - 70) + 2W

820 = 4W - 140

820 - 140 = 4W

680/4 = W

P=2L+2W
820=2(2W-70)+2W
820=4W-140+2W
820=6W-140
820+140=6W
960=6W
160=W

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