SOLUTION: Find the area of an equilateral triangle whose perimeter is 12 cm.

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Question 742900: Find the area of an equilateral triangle whose perimeter is 12 cm.
Answer by reviewermath(1029) About Me  (Show Source):
You can put this solution on YOUR website!
Divide the perimeter by 3 to get the measure of each side of equilateral triangle.
s = 12/3 = 4 cm.
The area of any equilateral triangle with side s is equal to s%5E2%28sqrt%283%29%29%2F4.
A+=+s%5E2%28sqrt%283%29%29%2F4
A+=+4%5E2%28sqrt%283%29%29%2F4
A+=+highlight%284sqrt%283%29%29 sq cm