Find the measure of an interior and exterior regular 24gon

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

What are the values of each variable in the diagram below?

In a timed typing test lara typed 63 words per minute. estimate the number of words she should be able to type in half in hour show your work