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15 March, 13:52

A rectangle has a perimeter 86 cm and length 36 cm what is its width

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Answers (2)
  1. 15 March, 15:30
    0
    Answer: w = 7cm

    Step-by-step explanation:

    Perimeter = 2 x length + 2 x width = 2L + 2w

    Width is 4 cm less than the length, so w = L-4

    36 = 2L + 2 (L-4)

    36 = 2L + 2L - 8

    36 = 4L - 8

    44 = 4L

    L = 11

    w = 7

    2 (11) + 2 (7) = 22 + 14 = 36

    Length is 11, width is 7
  2. 15 March, 15:54
    0
    7cm

    Step-by-step explanation:

    36x2 = 72

    86-72 = 14

    14/2 = 7
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