David Was Riding His Bicycle At A Speed Of 34.5 Kilometers Per Hour (km/h). Use The Fact That 1 Kilometer Is Approximately Equal To 0.6214 Miles To Convert This Speed To Miles Per Hour (mi/h). Round Your Answer To The Nearest Tenth. Do Not Type The
Understanding the Problem
In this problem, we are given the speed of David riding his bicycle in kilometers per hour (km/h) and asked to convert it to miles per hour (mi/h). To do this, we will use the fact that 1 kilometer is approximately equal to 0.6214 miles.
Converting Kilometers to Miles
To convert kilometers to miles, we can use the conversion factor of 0.6214 miles per kilometer. This means that for every kilometer, we can multiply it by 0.6214 to get the equivalent distance in miles.
Converting Speed from km/h to mi/h
Now that we know how to convert kilometers to miles, we can use this conversion factor to convert the speed from km/h to mi/h. We will multiply the speed in km/h by the conversion factor of 0.6214 miles per kilometer.
Calculating the Speed in mi/h
Given that David is riding his bicycle at a speed of 34.5 kilometers per hour (km/h), we can convert this speed to miles per hour (mi/h) using the conversion factor.
34.5 km/h x 0.6214 miles/km = 21.4 miles/h
Rounding the Answer
We are asked to round our answer to the nearest tenth. This means that we need to look at the hundredth place and decide whether to round up or down.
21.4 miles/h is already rounded to the nearest tenth, so our final answer is:
The Final Answer
The speed of David riding his bicycle is approximately 21.4 miles per hour (mi/h).
Conclusion
In this problem, we used the conversion factor of 0.6214 miles per kilometer to convert the speed of David riding his bicycle from kilometers per hour (km/h) to miles per hour (mi/h). We calculated the speed in mi/h and rounded our answer to the nearest tenth.
Key Takeaways
- To convert kilometers to miles, we can use the conversion factor of 0.6214 miles per kilometer.
- To convert speed from km/h to mi/h, we can multiply the speed in km/h by the conversion factor of 0.6214 miles per kilometer.
- When rounding numbers to the nearest tenth, we need to look at the hundredth place and decide whether to round up or down.
Additional Practice Problems
- Convert a speed of 25.6 km/h to mi/h.
- Convert a speed of 18.2 km/h to mi/h.
- Convert a speed of 40.9 km/h to mi/h.
Answer Key
- 25.6 km/h x 0.6214 miles/km = 15.9 miles/h
- 18.2 km/h x 0.6214 miles/km = 11.3 miles/h
- 40.9 km/h x 0.6214 miles/km = 25.4 miles/h
Converting Speed from Kilometers per Hour to Miles per Hour: Q&A ================================================================
Understanding the Problem
In our previous article, we discussed how to convert speed from kilometers per hour (km/h) to miles per hour (mi/h) using the conversion factor of 0.6214 miles per kilometer. In this article, we will answer some frequently asked questions related to this topic.
Q: What is the conversion factor from kilometers to miles?
A: The conversion factor from kilometers to miles is 0.6214 miles per kilometer.
Q: How do I convert speed from km/h to mi/h?
A: To convert speed from km/h to mi/h, you can multiply the speed in km/h by the conversion factor of 0.6214 miles per kilometer.
Q: Can I use a calculator to convert speed from km/h to mi/h?
A: Yes, you can use a calculator to convert speed from km/h to mi/h. Simply enter the speed in km/h and multiply it by 0.6214.
Q: What if I want to convert a speed of 50 km/h to mi/h?
A: To convert a speed of 50 km/h to mi/h, you can multiply 50 by 0.6214. This gives you a speed of 31.07 mi/h.
Q: Can I round my answer to the nearest tenth?
A: Yes, you can round your answer to the nearest tenth. In the case of 31.07 mi/h, you would round it to 31.1 mi/h.
Q: What if I want to convert a speed of 75 km/h to mi/h?
A: To convert a speed of 75 km/h to mi/h, you can multiply 75 by 0.6214. This gives you a speed of 46.55 mi/h.
Q: Can I use a conversion chart to convert speed from km/h to mi/h?
A: Yes, you can use a conversion chart to convert speed from km/h to mi/h. However, keep in mind that a conversion chart may not always be accurate, and it's always best to use the conversion factor.
Q: What if I want to convert a speed of 100 km/h to mi/h?
A: To convert a speed of 100 km/h to mi/h, you can multiply 100 by 0.6214. This gives you a speed of 62.14 mi/h.
Q: Can I use a calculator to convert multiple speeds from km/h to mi/h?
A: Yes, you can use a calculator to convert multiple speeds from km/h to mi/h. Simply enter each speed in km/h and multiply it by 0.6214.
Conclusion
In this article, we answered some frequently asked questions related to converting speed from kilometers per hour (km/h) to miles per hour (mi/h). We discussed how to use the conversion factor of 0.6214 miles per kilometer to convert speed, and how to round answers to the nearest tenth.
Key Takeaways
- The conversion factor from kilometers to miles is 0.6214 miles per kilometer.
- To convert speed from km/h to mi/h, multiply the speed in km/h by 0.6214.
- You can use a calculator to convert speed from km/h to mi/h.
- You can round your answer to the nearest tenth.
Additional Practice Problems
- Convert a speed of 25 km/h to mi/h.
- Convert a speed of 50 km/h to mi/h.
- Convert a speed of 75 km/h to mi/h.
Answer Key
- 25 km/h x 0.6214 miles/km = 15.54 mi/h
- 50 km/h x 0.6214 miles/km = 31.07 mi/h
- 75 km/h x 0.6214 miles/km = 46.55 mi/h