The radius of a cylinder is 3.5 ft. the height is 14 ft. find the surface area of the cylinder to the nearest tenth of a foot. show your work.

pl i am not good at math lol and this is hard for me.

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.