Trigonometry 7th Edition

by McKeague, Charles P.; Turner, Mark D.

Published by Cengage Learning

ISBN 10: 1111826854

ISBN 13: 978-1-11182-685-7

Chapter 7 - Section 7.4 - The Area of a Triangle - 7.4 Problem Set - Page 396: 4

Answer

See below.

Work Step by Step

If we know the length of all three sides of a triangle, we can find its area using Heron's formula. Here we first find the semi-perimeter.

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