Aladder 15 feet long leans against a wall and forms an angle of 45º with the ground. how far from the wall is the ladder?

The ladder is the hypotenuse of a 45 45 90 triangle.
The legs of a 45 45 90 triangle = hypotenuse / sqroot (2)

15 / 1.414 = 10.608

(Incidentally it is the "bottom" of the ladder that is 10.608 feet from the wall.  The "top" of the ladder is touching the wall.  LOL)

39,000

Step-by-step explanation:

100x300= 30,000

30,000+9,000= 39,000