Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 3 - Test - Page 172: 21

Answer

$10.8$ square cm.

Work Step by Step

The formula $A=0.5r^2\theta$ requires the angles to be in radius. Hence here the area of the sector: $s=0.5r^2\theta=0.5\cdot3^2(2.4)=10.8$ square cm.
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