find the area of a rectangle in ruby

To find the area of a rectangle in ruby, you can define a method that takes in the length and width of the rectangle as parameters and returns the product of the two values, which is the area. Here's an example code block:

main.rb
def rectangle_area(length, width)
  area = length * width
  return area
end

# example usage
puts rectangle_area(10, 5) # output: 50
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In the example code, we define a method called rectangle_area that takes two parameters, length and width. Inside the method, we calculate the area by multiplying length and width, and assign the result to the area variable. Finally, we return the value of area.

To use the method, we simply call it with the length and width of the rectangle as arguments, and it returns the calculated area.