Area = 0.5*20*20*sin(60) = 173.205 square cm to 3 decimal places
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Perimeter of equilateral triangle: 24 units Area of equilateral triangle: 27.713 square units rounded to three decimal places
Area of an equilateral triangle is s*(sqrt 3)/2, where s is the length of a side, or: area = s * 0.866666. . .
15.588 square inches.
A triangle with side a: 6, side b: 6, and side c: 6 inches has an area of 15.59 square inches.
A triangle with side a: 8, side b: 8, and side c: 8 yards has an area of 27.71 square yards.