Geometry: Trigonometry and Area
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What is the area of a regular nonagon with a radius of 14 in.?
566.9 in.²
What is the area of a regular 15-gon with a perimeter of 90 m?
635.1 m²
What is the area of the regular pentagon below?
688.2 ft²
What is the area of the regular octagon below?
229.1 m²
What is the area of the triangle below?
8.6 ft²
