Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 7 - Measurement - Review Exercises - Page 526: 52

Answer

11.7 inches (rounded)

Work Step by Step

We’re changing from a metric length unit to a U.S. length unit. In the “Metric to U.S. Units” side of the table, you see that 1 centimeter = 0.39 inch. Two unit fractions can be written using that information.(1 cm)/(0.39 inch) Or(0.39 inch)/(1 cm). Multiply by the unit fraction that allows you to divide out centimeters (that is, centimeters is in the denominator). 30 cm * (0.39 inch)/(1 cm) = 11.7 inches(rounded)
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