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4 December, 07:21

A rectangle has a length of x + 4 centimeters and a width of x centimeters. The perimeter of the rectangle is 28 centimeters. What is the value of x?

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Answers (2)
  1. 4 December, 07:31
    0
    The formula for perimeter is p = 2L + 2w

    plug the length and width

    2 (x + 4) + 2 (x) = 28

    2x + 8 + 2x = 28

    add like terms in one side

    4x + 8 = 28

    -8 - 8

    4x = 20

    divide by 4

    x = 5
  2. 4 December, 07:49
    0
    The perimeter=2 (length+width)

    length+width=perimeter/2

    x+4+x=28/2

    2x+4=14

    2x=10

    x=5
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