General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal
ISBN 10: 0132064529
ISBN 13: 978-0-13206-452-1

Chapter 1 - Matter: Its Properties and Measurement - Exercises - Units of Measurement: 37

Answer

1 $hm^{2}$ = 2.47 acres

Work Step by Step

1 hm = 10000 cm 1 in = 2.54 cm 2.54 cm = 1 in 1 cm = 1 / 2.54 in 1 cm = 0.3937007874 in 10000 cm = 3937.007874 in So 1 hm = 3937.007874 in 1 ft = 12 in 12 in = 1 ft 1 in = 1 / 12 ft 1 in = 0.08333333 ft 3937.007874 in = 3937.007874 * 0.08333333 ft = 328.0839894 ft So 1 hm = 328.0839894 ft 1 mi = 5280 ft 5280 ft = 1 mi 1 ft = 1 / 5280 mi 1 ft = 0.0001893939394 mi 328.0839894 ft = 328.0839894 * 0.0001893939394 mi = 0.0621371192 mi So 1 hm = 0.0621371192 mi 1 $hm^{2}$ = 0.0621371192 mi * 0.0621371192 mi 1 $hm^{2}$ = 0.0038610216 $mi^{2}$ 1 $mi^{2}$ = 640 acres 0.0038610216 $mi^{2}$ = 0.0038610216 * 640 acres = 2.471053824 acres So 1 $hm^{2}$ = 2.471053824 acres Rounding to 3 significant figures gives 2.47 acres.
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