Final answer:
The large rectangle with side lengths double that of the original 4-inch side rectangle will have a side length of 8 inches, and its perimeter would consequently be 32 inches.
Step-by-step explanation:
When we talk about enlarged rectangles and comparing their dimensions to the original, we are discussing geometry and scale factors. For example, if we Consider the original and enlarged rectangle, and the side length of the original rectangle is provided as 4 inches, and we are told that the dimensions of the large rectangle are twice the original, then we can determine the side length of the enlarged rectangle to be 4 inches x 2, which equals 8 inches. The perimeter of the original rectangle would be the sum of all its sides. If it's a square with side lengths of 4 inches, this would be 4 sides x 4 inches = 16 inches. The perimeter of the enlarged rectangle, similarly calculated, would be 4 sides x 8 inches = 32 inches. Thus, side length C mentioned as 4.3 mm seems not applicable for rectangles with inch measurements, and it's likely part of a different problem.