A ladder is placed against a wall of a building 20m above the ground. The foot of the ladder is 15m away from the bottom of the building. What is the length of the ladder?

A ladder is placed against a wall of a building 20m above the ground. The foot of the ladder is 15m away from the bottom of the building. What is the length of the ladder?

asked Jan 2, 2018 170k views

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