The area of an equilateral triangle whose sides measures 6 inches can be calculated as:
Area = (square root of 3)/4 x length of one side squared
Area = (1.732/4)* (6 x 6) = 15.48
Therefore the area of the equilateral triangle is 15.48 square inches. To learn more, visit http://www.mathopenref.com/triangleequilateralarea.html.