Please help please please ASAP please please

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Which statement about the annual percentage rate (apr) is not true?