If one side of an equilateral triangle has length of 6, what is the length of its altitude

Triangular Prism Area = 2*Triangle area + height * (side1+side2+side3) Triangle Area =.5 * base * altitudeTriangle Area =.5*3*2.6Triangle Area = 3.92 * Triangle Area = 7.8

height * (side1*side2*side3) = 6 * (3+3+3) = 54Total Area = 7.8 + 54 = 61.8 square centimeters