SOLUTION: What is the area of an equilateral triangle whose perimeter is 28 in?

Question 955043: What is the area of an equilateral triangle whose perimeter is 28 in?
Found 3 solutions by Valerie2623, Fombitz, Alan3354:
Answer by Valerie2623(1)   (Show Source): You can put this solution on YOUR website!
A= 37.72 inches^2
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
You can calculate the height of the triangle,

So then the area is,

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
What is the area of an equilateral triangle whose perimeter is 28 in?
---------------
For any regular polygon with n sides of length s:

=

=
=~ 37.72 sq inches

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