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9 October, 15:12

Find the length of the unknown sides

What are the length and width of a rectangle that has a perimeter of 60cm and a length 2 times the width?

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Answers (1)
  1. 9 October, 19:03
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    L = 20 cm, W = 10cm

    Step-by-step explanation:

    P=2L+2W

    P=60, L=2W

    60 = 2 (2W) + 2W

    60=4W+2W

    60=6W

    W=10

    plug in L=2W

    L=2x10

    L=20
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