find the area of a regular polygon in ruby

To find the area of a regular polygon in Ruby, you can use the following formula:

main.rb
area = 0.5 * num_sides * side_length * apothem
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Where num_sides is the number of sides of the polygon, side_length is the length of each side, and apothem is the distance from the center of the polygon to the midpoint of any side.

Here's an implementation of this formula in Ruby:

main.rb
def regular_polygon_area(num_sides, side_length)
  apothem = side_length / (2.0 * Math.tan(Math::PI / num_sides))
  return 0.5 * num_sides * side_length * apothem
end

# Example usage
area = regular_polygon_area(6, 10)
puts "Area of a regular hexagon with side length 10: #{area}"
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In this example, we're finding the area of a regular hexagon with side length 10. The output of this program would be:

main.rb
Area of a regular hexagon with side length 10: 259.8076211353316
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