Final answer:
Austin must calculate the total material needed for the wedge-shaped pillow using the sewing pattern's dimensions and subtract the 385 square inches he has to determine the additional amount needed. Without the pattern's dimensions, we cannot provide an exact answer.
Step-by-step explanation:
Austin needs to calculate the amount of material required to make a wedge-shaped pillow based on the given pattern, and then determine if additional material is necessary beyond the 385 square inches he already possesses. To compute the area needed for the pillow, Austin must follow the sewing pattern's dimensions and consider the shapes that make up the net of the wedge-shaped pillow. It often consists of a rectangular part for the sides and one or two circular parts if the ends are rounded. Once he calculates the total area of the material required for the pattern, he can subtract the 385 square inches he has to find out how much more material is needed. However, without the specific dimensions of the sewing pattern from Figure 8.5.49: Hope for Our World, we cannot provide the exact amount of additional material required.