The formula f = 5280m can be used to convert a measurement of f feet to an equivalent measurement of m miles. If an airplane flies at 21,120 feet above the ground, how much is that in miles?

Question

Question 3 options:

4 miles

111,513,600 miles

5.3 miles

132,620,600 miles

Answer 1

To convert feet to miles using the given formula, you need to divide the measurement in feet by the conversion factor, which is 5280.

21,120 feet ÷ 5280 = 4 miles

Therefore, the airplane flying at 21,120 feet above the ground is equivalent to 4 miles.