Xavitheking1477 Xavitheking1477
  • 04-09-2018
  • Mathematics
contestada

The length of a rectangular field is 7 m less than 4times the width. The perimeter is 136 m. Find thewidth and the length of the rectangle.

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tramserran
tramserran tramserran
  • 07-09-2018

Length (L): 4w - 7

width (w): w

Perimeter (P) = 2L + 2w

               136 = 2(4w -7) + 2(w)

               136 = 8w - 14 + 2w

               136 = 10w - 14

               150 = 10w

                 15 = w

Length (L): 4w - 7   = 4(15) - 7   = 60 - 7   = 53

Answer: width=15 m, length=53 m

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