Question

a ladder rests against the top of a wall. the head of a person 6 feet tall just touches the ladder. the person is 9 feet from the wall and 6 feet from the foot of the ladder. find the height of the wall​

Answer 1

Answer is 15
Because a person 6 feet can just touch the ladder it means the ladder is 6 feet away from the ground and if a person 9 feet from the wall can touch the foot of the ladder that means the person can touch the foot of the ladder from the wall so the ladder is 9 feet then if we add both of them we get 15