Answer
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Step 1:I'll solve this conversion problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Recall the conversion factor between kilometers and miles
The standard conversion factor is: $$1 \text{ km} = 0.621371 \text{ miles}
Step 3:: Set up the conversion calculation
20 \times 0.621371 = 12.42742 \text{ miles}
To convert 20 km to miles, multiply the distance by the conversion factor:
Step 4:: Round to a reasonable number of significant figures
12.43 \text{ miles}
Typically, we'll round to two decimal places:
Final Answer
Key Points: - The conversion factor is exact - Always multiply the original value by the conversion factor - Round appropriately based on the precision of the original measurement
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