Help me out please, and maybe you could explain how you got your answer

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?

$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?