Is this non linear or linear?

Ineed to know the answer right now! !

Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2

What is the ratio of the length of an object in yards to the length of the same object in miles?