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9 July, 18:00

A regular pentagon has an apothem of 3.2 m and an area of 37.2 m². What is the length of one side of the pentagon?

3.96 m

4.65 m

11.875 m

23.75 m

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Answers (1)
  1. 9 July, 19:41
    0
    A = 5 l * h / 2

    37.2 m² = 5 l * 3.2 m / 2 / * 2

    74.4 = 5 l * 3.2

    74.4 = 16 l

    l = 74.4 : 16

    l = 4.65 m

    Answer: B) 4.65 m
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