Given this area, the sides measure 52.92734 cm
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Area of an equlateral triangle = 0.5*side2*sin(60)
Area of equilateral triangle: 0.5*7*7*sin(60 degrees) = 21.2 square inches
Do you mean an equilateral triangle? Then if so then the formula for the area of any triangle: 0.5*a*b*sinC whereas a and b are the embraced sides of angle C And in the case of an equilateral triangle it is: 0.5*any side squared*sin(60 degrees) Alternatively use Pythagoras' theorem to find the altitude of the triangle then use: 0.5*base*height = area
the perimeter is 36 and the area is 144
For an equilateral triangle with side length a, area = (a²√3)/4, which for a= 6cm is 15.6 cm² [rounded to 1 decimal place]