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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. HELP AND U WILL GET MEDALS IN RETURN!
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OpenStudy (anonymous):
9 inch perimeter means 3 inches for each side, Use this formula ((s^2)/4) Sqrt[3]
OpenStudy (anonymous):
9/4 Sqrt[3]
OpenStudy (saifoo.khan):
1/2 ab sinC
OpenStudy (saifoo.khan):
imran, isnt it 81/4sqrt 3 ?
OpenStudy (anonymous):
9 inches is perimeter; not sides
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OpenStudy (saifoo.khan):
U got that.
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