Which formula is used to determine the area of a triangular piece of sheet metal?

The correct formula for determining the area of a triangular piece of sheet metal is derived from the principles of geometry. The formula is A = 1/2 (base × height), which correctly identifies that the area of a triangle is half of the product of the base length and the height.

In a triangle, the base refers to one side, while the height is the perpendicular distance from the base to the opposite vertex. Since a triangle can be thought of as half of a rectangle (when divided diagonally), this formula effectively encapsulates that concept by taking half of the product of the two dimensions that define the triangle’s space.

The other options presented do not correctly represent the geometric principles required to calculate the area of a triangle. For instance, simply adding the base and height does not yield an area measurement, nor does multiplying them directly without dividing by two. Subtracting the height from the base does not relate to area calculation within the context of a triangle either. Hence, the formula A = 1/2 (base × height) accurately reflects the necessary computation for determining triangular area in aviation maintenance contexts, where understanding material dimensions is vital.