What is the slope of the ladder?

A ladder is placed against a wall. A foot of the ladder is 4 feet away from the wall and the top of the ladder touches the wall at a point 18 feet awa

A ladder is placed against a wall. A foot of the ladder is 4 feet away from the wall and the top of the ladder touches the wall at a point 18 feet away off the ground. What is the slope of the ladder?

or:A ladder is placed against a wall. A foot of the ladder is 4 feet away from the wall and the top of the ladder touches the wall at a point 18 feet away off the ground. What is the slope of the ladder?

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