Answer
210
Work Step by Step
We add the area of the bottom equilateral triangle to the lateral area. Recall, the area of an equilateral triangle is $\frac{\sqrt{3}}{4}s^2$. Thus:
$A= \frac{\sqrt{3}}{4}12^2 + 147.32 \approx 210$
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 9 - Review Exercises - Page 431: 12b
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
