Basic College Mathematics (9th Edition)

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

Chapter 8 - Geometry - 8.6 Circles - 8.6 Exercises: 10

Answer

$Circumference \approx 9.4$ in. $Area \approx 7.1$ inches$^{2}$

Work Step by Step

1. Find the circumference of the circle Let $C =$ the circumference of the circle $C = \pi \times 3$ $C = 3.14 \times 3$ $ C = 9.42$ in. $C \approx 9.4$ in. 2. Find the area of the circle $Let A =$ area of the circle $A = \pi r^{2}$ $A = (3.14)(\frac{3}{2})^{2}$ (Since radius $= \frac{diameter}{2}$) $A = (3.14)(1.5)^{2}$ $A = (3.14)(2.25)$ $A = 7.065$ inches$^{2}$ $A \approx 7.1$ inches$^{2}$
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