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33 votes
33 votes
Find the area of the regular 18 gon with radius 56 mm

User Johnetta
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1 Answer

18 votes
18 votes

Answer:

since there are 18 of these isosceles triangles in the polygon, then multiply this by 18 to get area of the polygon with 18 sides is equal to 28.56497087 square units. you can round this to as many desimal digits as required. each of those little triangle with a vertex angle of 20 degrees is an isosceles triangle.

User Seanlook
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