honors geometry

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find the area of an eqilateral triangle with perimeter 45m

  • honors geometry -

    3*side length = 45m
    each side = 45/3 = 15m
    Height
    = 15m * sin(60°)
    = 15*(√3)/2
    = 7.5√3

    Area
    = 15m*7.5√3 /2 m
    = (225/4)√3 m²

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