Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 8 - 8.2 - Law of Cosines - 8.2 Exercises - Page 574: 38

Answer

$Area=108\sqrt {10}\approx341.53$

Work Step by Step

$s=\frac{a+b+c}{2}=\frac{33+36+21}{2}=\frac{90}{2}=45$ $Area=\sqrt {s(s-a)(s-b)(s-c)}=\sqrt {45(45-33)(45-36)(45-21)}=\sqrt {45(12)(9)(24)}=\sqrt {116640}=108\sqrt {10}\approx341.53$
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.