Ajacket costs £45. this price is reduced by a third in a sale. how much is saved

Which phrase generalizes the specific terminology bolded in the text?

The room above is shaped like a rectangle and has a perimeter of 34 feet. if the room is 11 feet long, how wide is it?

The room above is shaped like a rectangle anthe room above is shaped like a rectangle and has a perimeter of 34 feet. if the room is 11 feet long, how wide is it?