Answer:
The total length would be

Explanation:
The line plot figure is missing in the question, so below is the figure attached.
Now, to find the total length, if Kara lines up all the
inch buttons.
So, from below figure we see that in the line plot
inch buttons represents 3 buttons.
Length of buttons =
inch.
Number of buttons = 3.
Now, to get the total length of
inch buttons we multiply length of buttons by number of buttons:




Therefore, the total length would be
