Answers

  • Brainly User
2016-06-26T16:58:41+08:00
Perimeter of equilateral triangle = 3a
Where a = side.
In terms of perimeter (P), side (a) = P/3

Area of Equilateral Triangle:

        a²  \sqrt{3}
A = ---------             where a = side = P/3
          4

Substitute a with P/3, then the function A (Area) in terms with P (perimeter) as the independent variable:

        (P/3)² ( \sqrt{3} )
A = --------------------
             4

Click image below to view explanation.
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