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 31: 64


Area of outer ring is bigger.

Work Step by Step

Area of inner circle = $\frac{22}{7} \times Radius^{2}=\frac{22}{7} \times 0.64^{2} cm^{2}=1.29cm^{2} $ Area of outer ring = $ \frac{22}{7} \times (1.78^{2}-1.66^{2})=1.297cm^{2}$ So, area of outer ring is bigger.
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