#### Answer

240

#### Work Step by Step

We find the height of each triangle:
$ h = \sqrt{13^2 - 5^2 }=\sqrt{144}=12$
Thus, we find the lateral area:
$A = (1/2)(12)(4)(10)=240$

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Published by
Cengage

ISBN 10:
978-1-337-61408-5

ISBN 13:
978-1-33761-408-5

240

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