Plz I need help with the last 2 and plz simplify then

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

Aphrase is shown read the phrase and give me the answer

The point of intersection of the diagonals of a rectangle is 4 cm further away from the smaller side then from the larger side of the rectangle. the perimeter of the rectangle is equal to 56 cm. find the lengths of the sides of the rectangle. 16 points answer quick