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What is the area of the decagon?

What is the area of the decagon?

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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Question
Finding the Area of a Regular Polygon What is the area of the decagon? 1. Break the Regular Polygon into the same number of triangles as sides. (Use the radii.) 2. Find the area of 1 triangle. 1 12.3 in. 3. Multiply by the number of triangles (sides). 8 in.
Transcribed Image Text:Finding the Area of a Regular Polygon What is the area of the decagon? 1. Break the Regular Polygon into the same number of triangles as sides. (Use the radii.) 2. Find the area of 1 triangle. 1 12.3 in. 3. Multiply by the number of triangles (sides). 8 in.
Expert Solution
Step 1

Given,

A  regular decagon,

Perpendicular distance from center to  the side of the decagon is 12.3 in 

Length of side = 8 in 

We have to find the area of regular decagon. 

 

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