What is the area of a rectangle that is 2/5 cm wide and 1/2 cm long? In mixed number

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?

Need on this geometry question. explain how you did it.

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.