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20 November, 07:01

A chalkboard has a perimeter of 18 ft and is 6 ft long. Find the height of the chalkboard

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Answers (2)
  1. 20 November, 07:07
    0
    P = 2H + 2L

    L = 6

    P = 18

    18 = 2H + 2*6

    18 = 2H + 12

    6 = 2H

    H = 3 ft
  2. 20 November, 07:16
    0
    The height of the chalkboard is 3ft. Since the chalkboard has a perimeter of 18ft, that means that the 2 lengths of the board are 6 ft or 12 ft added together. Afterwards, subtract 12 from 18 ft (18 - 12), which shall get you 6ft. Then, divide 6 by 2, since there are two sides that represent the height.

    Therefore, the height is 3 ft.
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