If it's perimeter of an equilateral triangle is 180 cm what will be it's area

Dear Student,
Perimeter Of Equilateral Triangle=3×SidePerimeter is given to be 180 cmHence side of triangle=1803=60 cmArea Of Equilateral Triangle=34×Side2i.e Area=34×60×60=9003 sq cm
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Here is the right answer by heron's formula (1st part)

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(2nd part) by heron's formula

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