Modeling with Geometric Shapes and Properties Practice Test

A long wooden beam used in construction has a uniform rectangular cross-section. To estimate how much paint is needed to coat all sides, it is modeled as a rectangular prism, ignoring small chips, knots, and roughness. (The model is not exact.)

Which reasoning best supports the chosen model?

A city installs a vertical storage tank for drinking water. For estimating how many liters it can hold, the tank is modeled as a cylinder, ignoring small dents, bolts, and the thickness of the metal walls. (The model is not exact.)

Which property of the model is most relevant for answering the question about how much water the tank can hold?