Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 5 - Review Exercises - Page 263: 37

Answer

The altitude is about 8.66 inches long.

Work Step by Step

The altitude of an equilateral triangle splits the shape into two 30 60 90 triangles. If the hypotenuse is 10, then the short leg is 5 and therefore the long leg (the altitude) is 5$\sqrt 3$. 5$\sqrt 3$$\approx$8.66
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