Final answer:
To increase the size of a scale drawing, you multiply the side lengths by a scale factor greater than 1, not by a fraction less than 1. A scale factor like 2 would double the side lengths of the drawing.
Step-by-step explanation:
The statement that to increase the size of a scale drawing, we multiply the side lengths by a fraction is false. To increase the size of a scale drawing, you multiply the side lengths by a scale factor greater than 1. If a fraction is used for scaling, it should be greater than 1, which could be represented as a fraction like 3/2 or 2/1, indicating that the actual size is 1.5 or 2 times the drawing, respectively.
For example, if a scale factor of 2 is used for a square with 4-inch sides, the side length of the larger square is calculated as: 4 inches × 2 = 8 inches. Using a scale factor correctly is key in problem-solving to determine the scaled-up or actual dimensions in a model.