Can you help me pls?

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?

Asquare parking lot has 6,400 square meters what is the length in meters

What is not true about kl and mn? what is mn? (show your work)