Answer:
The volume of a triangular pyramid can be calculated using the formula:
Volume = (1/3) x (Area of base) x (Height)
In this problem, the height of the speaker is 8 inches, and the area of the base is 13 square inches. Therefore, the volume of the speaker can be calculated as:
Volume = (1/3) x 13 x 8
Volume = 104/3
Volume ≈ 34.67 cubic inches
Therefore, the volume of the speaker is approximately 34.67 cubic inches.