To determine the most appropriate units for Juan's road trip to Pennsylvania, we should convert all the given distances to the same unit so we can compare them.
-
Kilometers: \(2 \times 10^3 \text{ km}\)
- \(2 \times 10^3 \text{ km} = 2000 \text{ km}\)
-
Meters: \(2 \times 10^5 \text{ m}\)
- \(2 \times 10^5 \text{ m} = 200,000 \text{ m}\)
- To convert meters to kilometers: \(\frac{200,000 \text{ m}}{1000} = 200 \text{ km}\)
-
Centimeters: \(2 \times 10^7 \text{ cm}\)
- \(2 \times 10^7 \text{ cm} = 20,000,000 \text{ cm}\)
- To convert centimeters to kilometers: \(\frac{20,000,000 \text{ cm}}{100,000} = 200 \text{ km}\)
-
Millimeters: \(2 \times 10^8 \text{ mm}\)
- \(2 \times 10^8 \text{ mm} = 200,000,000 \text{ mm}\)
- To convert millimeters to kilometers: \(\frac{200,000,000 \text{ mm}}{1,000,000} = 200 \text{ km}\)
Comparing these distances:
- Kilometers: 2000 km
- Meters: 200 km
- Centimeters: 200 km
- Millimeters: 200 km
Given that his travel distance is 2000 kilometers, the most appropriate units for describing the distance he plans to travel would be kilometers.
Thus, the answer is 2×10^3 kilometers.
1 answer