Final answer:
Without numerical lengths for sides A, B, and C, the perimeter of the composite figure cannot be determined. The perimeter is the sum of the lengths of all sides, specific methods may vary based on shape properties.
Step-by-step explanation:
The question presented is about calculating the perimeter of a composite figure. Unfortunately, without a visual description or numerical lengths for sides A, B, and C, we cannot determine the perimeter of the composite figure, or confirm if one of the options (A) 72, (B) 84, (C) 96, or (D) 108 is correct. To find the perimeter, you would typically add together the lengths of all the sides. In some cases, such as a rectangle or a parallelogram, you could use the properties of the shape – for example, opposite sides being equal in length. For other shapes such as a polygon made up of different types of shapes, you'd need to know the length of each side to calculate the composite perimeter.
Moreover, for a parallelepiped volume calculation using the cross product and dot product, as mentioned in part of the question, you would indeed use the scalar triple product formula (B x C) . A, which gives the volume of the parallelepiped formed by vectors A, B, and C.