find the surface area of a pyramid in ruby

To find the surface area of a pyramid, you need to know the length of the base and the slant height of the pyramid. The formula for the surface area of a pyramid can be expressed as:

surface area = base area + (1/2 * perimeter * slant height)

Here's an example Ruby function that calculates the surface area of a pyramid:

main.rb
def pyramid_surface_area(base_length, slant_height)
  base_area = base_length**2
  perimeter = 4 * base_length
  surface_area = base_area + (0.5 * perimeter * slant_height)

  return surface_area
end
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You can call this function with the length of the base and the slant height of the pyramid to get the surface area:

main.rb
puts pyramid_surface_area(3, 5.2) #=> 31.2
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In this example, the length of the base is 3 units and the slant height is 5.2 units. The pyramid_surface_area function returns a surface area of 31.2 square units.