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: 79

Answer

The Nile River is longer by 208 km.

Work Step by Step

We know that 1 mile = 1.6 kilometers. We can convert the length of the Nile River from units of miles to units of kilometers. $4130~mi = \frac{4130~mi}{1}\times \frac{1.6~km}{1~mi} = 6608~km$ The Nile River has a length of 6608 km. The Amazon River has a length of 6400 km. The Nile River is longer by 208 km.
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