Question 392269
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Hi
Let x and 1.7x represent the width and length respectively
P = 2*length + 2*width  (Distance all away around)
Question states***
 2(1.7x) + 2x = 28m
  3.4x + 2x = 28m
      5.4x = 28m
         x = 28m/5.4
         x = 5.2m, the width.  The length = 8.8m (1.7*5.2)
Answers given 1n the nearest tenth of a meter

CHECKING our Answer
 2*5.2 + 2*8.8 = 10.4 + 17.6 = 28m