How fast is 70 km/h in mph?
Understand the Problem
The question is asking to convert a speed of 70 kilometers per hour (km/h) into miles per hour (mph). This involves using a conversion factor between kilometers and miles.
Answer
The speed is approximately $43.50 \text{ mph}$.
Answer for screen readers
The speed converted to miles per hour (mph) is approximately $43.50 \text{ mph}$.
Steps to Solve
- Identify the conversion factor
We need to use the conversion factor between kilometers and miles. The factor is:
$$ 1 \text{ kilometer} \approx 0.621371 \text{ miles} $$
- Multiply the speed in kilometers by the conversion factor
To convert the speed of 70 kilometers per hour (km/h) into miles per hour (mph), we multiply by the conversion factor.
$$ \text{Speed in mph} = 70 \text{ km/h} \times 0.621371 \text{ miles/km} $$
- Calculate the result
Now we perform the multiplication:
$$ \text{Speed in mph} = 70 \times 0.621371 $$
Calculating this gives:
$$ \text{Speed in mph} \approx 43.496 $$
Since we typically round to two decimal places for speed, we will round this value.
The speed converted to miles per hour (mph) is approximately $43.50 \text{ mph}$.
More Information
Converting kilometers to miles can be useful in many contexts, like travel and transportation, especially in countries that use different measurement systems. Understanding these conversions can help with navigation and planning trips.
Tips
- Forgetting to multiply by the correct conversion factor can lead to errors.
- Not rounding the final answer to a reasonable number of decimal places can create confusion. To avoid this, always double-check that the conversion factor is correct and that the final answer is appropriately rounded.
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