Basic College Mathematics (9th Edition)

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

Chapter 7 - Measurement - Summary Exercises - U.S. and Metric Measurement Units: 30

Answer

24 cm; 0.24 m; 240 mm

Work Step by Step

To find the difference in height between the tallest and 10th tallest people, in centimeters The tallest person according to table is Robert Wadlow (1918–1940) USA whose height is 2.72 m Put the unit for the answer (centimeters) in the numerator of the unit fraction; put the unit you want to change (m) in the denominator. Unit Fraction equivalent to 1 = (100 centimeters)/(1 meter) Multiply 2.72 m times the unit fraction. 2.72 m * (100 centimeters)/(1 meter) = 272 cm The 10th tallest person Jeng Jinlian (tallest female) (1964–1982) China whose height is 248 cm The difference in height between the tallest and 10th tallest people, in centimeters = 272 cm – 248 cm = 24 cm. Convert the height difference to meters and millimeters To find the height in meters Put the unit for the answer (meters) in the numerator of the unit fraction; put the unit you want to change (cm) in the denominator. Unit Fraction equivalent to 1 = (1 meter)/(100 centimeter) Multiply 24 cm times the unit fraction. 24 cm * (1 meter)/(100 centimeter) = 0.24 m To find the difference in millimeters Put the unit for the answer (centimeters) in the numerator of the unit fraction; put the unit you want to change (mm) in the denominator. Unit Fraction equivalent to 1 = (10 millimeters)/(1 centimeters) Multiply 4 cm times the unit fraction. 24 cm * (10 millimeters)/(1 centimeters) = 240 mm
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