Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 9 - Measurement - 9.1 Measuring Length; The Metric System - Exercise Set 9.1: 53

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. $30~miles = 4828032~cm = 48.3~km$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.