#### Answer

Length = 130 m

#### Work Step by Step

Let width = x
Length = 2x – 10
Perimeter = 400
2(length + width) = 400
2(2x-10 + x) = 400
3x – 10 = 200
3x = 210
x = 70 m
Length = 2(70) – 10 = 130 m

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

Length = 130 m

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