Question

Q.3 A ladder 25 m long reaches a window of a building 20m above the ground . Determine the distance of the foot of the ladder from the building?​

Answer 1

Answer:

15m

Step-by-step explanation:

By pythagoras theoram, we have

∴ AB² =AC² +BC²

⇒ 25² =AC² +20²

⇒ AC² =625−400=225

⇒ AC= ✓225m = 15m

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