PLEASE HELP! IT WOULD BE VERY MUCH APPRECIATED!

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet

Plzzz answer both questions and i will give you 100 points