The perimeter of a rectangle is 24 cm. If the length is 7 cm, find it width​

Question

The perimeter of a rectangle is 24 cm. If the length is 7 cm, find it width​

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Sigridomena 4 years 2021-07-20T19:32:18+00:00 2 Answers 19 views 0

Answers ( )

  1. thongdat2
    0
    2021-07-20T19:33:28+00:00
    Reply

    Answer:

    The width is 5 cm

    Step-by-step explanation:

    The perimeter of a rectangle is

    P = 2(l+w)

    Substitute what we know

    24 = 2(7+w)

    Divide each side by 2

    24/2 = 2/2(7+w)

    12 = 7+w

    Subtract 7 from each side

    12-7 = 7+w-7

    5 =w

    The width is 5 cm

  2. Latifah
    0
    2021-07-20T19:34:03+00:00
    Reply

    The formula for perimeter = 2 x length  + 2 x width

    Fill in the known dimensions:

    24 = 2 x 7 + 2 x width

    Simplify:

    24 = 14  + 2 x width

    Subtract 14 from both sides:

    10 = 2 x width

    Divide both sides by 2:

    Width = 5 cm

    Answer: Width = 5 cm.

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