A triangle with side a: 7, side b: 7, and side c: 7 cm has an area of 21.22 square cm.
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Area of Equilateral Triangle A= S2 * (Root 3)/4, where A= Area of the triangle S= Side of the triangle.
27.713 units2
15.2 inches.
12
Given an altitude of 12 units, an equilateral triangle has side lengths of 13.9 (13.85641) units.