If the side length of the bottom is a, then the total area of the pyramid is a______ .

If the side length of the bottom is a, then the total area of the pyramid is a______ .

Let the length of the side edge of a regular triangular pyramid be B, then we know from the condition that 2B2 = A2, s table = 34a2 + 3 × 12 × 12a2 = 3 + 34a2