Final answer:
The density of the macaroni is calculated by dividing its mass by its volume. With a given mass of 200 grams and an assumed volume example of 100 cm³, the calculation would yield a density of 2 g/cm³.
Step-by-step explanation:
To calculate the density of the macaroni, we need to have the mass and the volume. The mass is given as 200 grams. The student is instructed to use the volume calculated in a previous part of the problem (part a), which is not provided here. Assuming that the volume has been calculated, the density formula which is Density = Mass / Volume is used. For example, if the volume we calculated in part a is 100 cm3, then the density would be:
Density = 200 g / 100 cm3 = 2 g/cm3.
Remember to use the correct units for mass and volume to ensure the density is expressed in grams per cubic centimeter (g/cm3). The exact number for the calculated volume should be plugged into this formula to find the correct density of the macaroni.