Answer
48.3 km
Work Step by Step
We can convert 30 miles to units of centimeters.
$30 ~miles = \frac{30~mi}{1}\times \frac{5280~ft}{1~mi}\times \frac{12~in}{1~ft} \times \frac{2.54~cm}{1~in}$
$30~miles = 4828032~cm$
Since 1 km = 100,000 cm, we need to move the decimal place 5 places to the left to convert from units of cm to units of km.
$30~miles = 4828032~cm = 48.3~km$
