round a number to the nearest tenth in ruby

To round a number to the nearest tenth in Ruby, you can use the round method with an argument of 1. This will round the number to one decimal place. Here's an example:

main.rb
number = 3.14159
rounded = number.round(1)
puts rounded # Output: 3.1
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In the example above, we start with a float number of 3.14159. We then call the round method on it with an argument of 1. This rounds the number to one decimal place and returns a new float rounded of 3.1. Finally, we use puts to print the rounded number to the console.