Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 8 - Section 8.3 - Regular Polygons and Area - Exercises - Page 378: 29

Answer

(24 + 12$\sqrt 3$) $in^{2}$

Work Step by Step

Given that in a regular polygon of 12 sides, the measure of each side is 2in and the measure of apothem is (2 +$\sqrt 3$ ) in We need to find out the area of this regular polygon The perimeter of the given polygon is P = 12 * s = 12 * 2 =24 in The area of a regular polygon whose apothem has length a and whose perimeter P is given by A = $\frac{1}{2}$ ap The area of the given regular polygon = $\frac{1}{2}$ (2 +$\sqrt 3$ ) * 24 = (24 + 12$\sqrt 3$) $in^{2}$
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