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OpenStudy (anonymous):
Find the area of an equilateral triangle (regular 3-gon) with the given measurement. 9-inch perimeter A = sq. in.
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OpenStudy (anonymous):
any answer???
OpenStudy (precal):
equilater triangle, do you know what that means?
OpenStudy (dumbcow):
|dw:1340591411928:dw| what is height of triangle? then you can use area formula: A = 1/2*base*height
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