Final answer:
The question is related to Physics and involves calculating the volume rate of flow for a drinking fountain's exit hole, given the radius. To find the volume rate of flow, we need the area of the exit hole and the velocity of the water flow, which is not provided.
Step-by-step explanation:
The question involves Physics, specifically fluid dynamics within the context of a drinking fountain. The objective is to calculate the volume rate of flow of water through a fountain exit hole with a given radius. To find the volume rate of flow (Q), the formula Q = A × v, where A is the cross-sectional area of the exit hole and v is the velocity of the water flow, can be utilized. Since the radius is given, the area A can be calculated using the formula A = π × r².
However, the velocity v is not provided in the question, so unless this information is given elsewhere or can be derived from other data, the volume rate of flow cannot be calculated.