#### Answer

20.8

#### Work Step by Step

First, we use the Pythagroean theorem to find:
$4^2 = 2^2 + (\frac{x^2}{2^2}) \\ x^2 = 48$
We use the formula for area:
$A = \frac{\sqrt3}{4}\times x^2\\A = \frac{\sqrt3}{4}\times 48 \\A= 20.8$

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Published by
Brooks Cole

ISBN 10:
9781285195698

ISBN 13:
978-1-28519-569-8

20.8

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