College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 1 - Measurement and Problem Solving - Learning Path Questions and Exercises - Exercises - Page 30: 49


$a). cm$ $b). 0.946 m^{2}$

Work Step by Step

a). 1 m = 100 cm, So, 1.245 m = 124.5 cm, and 0.760 m = 76 cm. The last digit 5 in 124.5 cm indicates that it is an estimated value. So, the smallest division of the instrument is cm. b). Area of the table top = $1.245 m \times 0.760 m = 0.946 m^{2}$ Since, 0.760 has the least number of significant figures which is 3, the answer should be also with 3 significant figures.
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.