A marathon is about 26 miles long. Which of these shows how to convert 26 miles to feet?

StartFraction 26 miles Over 1 EndFraction times StartFraction 1 foot Over 5,280 miles EndFraction
StartFraction 26 miles Over 1 EndFraction times StartFraction 1 mile Over 5,280 feet EndFraction
StartFraction 26 miles Over 1 EndFraction times StartFraction 5,280 feet Over 1 mile EndFraction
StartFraction 26 miles Over 1 EndFraction times StartFraction 5,280 miles Over 1 foot EndFraction

1 answer

To convert miles to feet, you need to know that 1 mile is equal to 5,280 feet.

To perform the conversion from miles to feet, you would multiply by the conversion factor that has feet in the numerator and miles in the denominator. The correct choice for converting 26 miles to feet would be:

\[ \frac{26 \text{ miles}}{1} \times \frac{5,280 \text{ feet}}{1 \text{ mile}} \]

This is because you want to cancel out miles and convert to feet. So the correct answer is:

\[ \text{StartFraction 26 miles Over 1 EndFraction times StartFraction 5,280 feet Over 1 mile EndFraction} \]