Answer
3240 degrees
Work Step by Step
We know that the sum of the interior angles is given by:
Sum=180∗(n−2)
Where n is the number of sides.
Thus, for the given problem, we have:
Sum=180∗(20−2)
3240
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 13 - Probability - 13-5 Probability Models - Practice and Problem-Solving Exercises - Page 855: 30
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