Each leg of a 45°-45°-90° triangle measures 14cm. what is the length of the hypotenuse?

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie