Subjects unit conversion

Distance Appropriateness 09Abcf

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Question: Rupert and Kai have both calculated the distance between two cities. Rupert has calculated the distance to be $8.2$ miles and Kai has calculated the distance to be $43,296$ feet, which answer is more appropriate? Explain your reasoning.
1. **State the problem:** We need to determine which distance measurement is more appropriate: $8.2$ miles or $43,296$ feet. 2. **Recall the conversion factor:** $1$ mile equals $5,280$ feet. 3. **Convert Kai's distance from feet to miles:** $$\text{Distance in miles} = \frac{43,296}{5,280}$$ 4. **Simplify the fraction:** $$\frac{43,296}{5,280} = \frac{\cancel{43,296}}{\cancel{5,280}} = 8.2$$ 5. **Interpretation:** Both Rupert and Kai have calculated the same distance, just in different units. 6. **Which answer is more appropriate?** Since distances between cities are commonly expressed in miles rather than feet, Rupert's answer of $8.2$ miles is more appropriate for practical use. **Final answer:** Rupert's distance of $8.2$ miles is more appropriate because it is the same as Kai's distance converted to miles and miles are the standard unit for measuring distances between cities.