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Equilateral triangle with perimeter given: its area

The same question, asked 2 times: 18 Jul 2023 S2*, 11 Sep 2024 S1. Every wording below, oldest first.

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  1. Question 1

    18 Jul 2023 S2

    74
    The perimeter of an equilateral triangle is 48 cm. Find its area (in cm2\text{cm}^2 ).

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  2. Question 2

    11 Sep 2024 S1

    54
    If the perimeter of an equilateral triangle is 36 units, then its area is (in square units):

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