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Mathematics 12 Online
OpenStudy (highschoolmom2010):

The perimeter of an equilateral triangle is 90 in. What is its area to the nearest square inch?

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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