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OpenStudy (highschoolmom2010):
The perimeter of an equilateral triangle is 90 in. What is its area to the nearest square inch?
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OpenStudy (highschoolmom2010):
|dw:1391058396306:dw|
OpenStudy (highschoolmom2010):
that looks high
OpenStudy (highschoolmom2010):
i dont have the height...
OpenStudy (lastdaywork):
Area of equilateral triangle = (√3)a^2 /4 where a is sidelength Derivation - |dw:1391264863942:dw|
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