How is the cubic footage of an attic with a gable roof calculated?

To calculate the cubic footage of an attic with a gable roof, understanding the shape is key. A gable roof creates a triangular area at the peak, meaning that the space available in the attic cannot be fully represented by simply multiplying width, length, and height together.

The correct method involves considering that the width of the attic is divided into two equal triangles forming the gable. Therefore, the formula requires taking the width multiplied by the length, then dividing by 2 to account for the triangular shape of the roof. Once that area is identified, multiplying it by the height gives the full volume of the attic in cubic feet.

This approach accurately reflects the structural characteristics of a gable roof. The other options either do not incorporate the triangular nature of the roof or use incorrect multiplication and division factors, leading to erroneous volume calculations.