Can anyone help me with this math please I will give brainlist

Ten times the square of a non-zero number is eqaul to ninety times the number

For what value of (y) is 3^3/3^y =1/9

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