Arectangular field is 450 meters long and 400 meters wide. what is the area of the field in square kilometers? do not round your answer. be sure to include the correct unit in your answer.

Anyone know? will mark brainliest if correct!

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]